Linearne enačbe. Matrična algebra. Linearne enačbe. Linearne enačbe. Linearne enačbe. Linearne enačbe

Size: px
Start display at page:

Download "Linearne enačbe. Matrična algebra. Linearne enačbe. Linearne enačbe. Linearne enačbe. Linearne enačbe"

Transcription

1 Sistem linearnih enačb Matrična algebra Oseba X X X3 B A.A. 3 B.B. 7 C.C. Doc. dr. Anja Podlesek Oddelek za psihologijo, Filozofska fakulteta, Univerza v Ljubljani Študijski program prve stopnje Psihologija 3. semester, Korelacijske metode Katere vrednosti neznank rešujejo vse enačbe naenkrat? Uporaba: -obdelava digitalnih signalov, -računalniška grafika, -ocene -napovedi B = *X + 3*X + *X3 Sistem linearnih enačb neznanke koeficienti sistema linearnih enačb konstante Če so konstante 0, je sistem linearnih enačb HOMOGEN. Vsak homogeni sistem ima vsaj eno rešitev, tj. trivialno rešitev, ki jo dobimo tako, da vsem spremenljivkam pripišemo vrednost 0. V enačbah se neznanke pojavljajo samo na prvo potenco, ne pojavljajo se zmnožki. Hitro ugotovimo, ali so taki sistemi rešljivi ali ne. matrični račun: matrike determinante operacije z matrikami Matrike omogočajo enostaven zapis in reševanje sistema linearnih enačb.

2 Matrike Matrike in matrična algebra matrika reda m x n (m, n dimenzije matrike) a a a n a a a n A am am amn stolpec matrice j, < j < n element matrike ali komponenta matrike vrsta matrice i, < i < m diagonala matrike Primer: matrika reda x 3: M Kdaj so matrike enake? A in B sta enaki, če sta istega tipa in če je a ij = b ij za vse pare indeksov i, j. Matrike označujemo z velikimi tiskanimi črkami v mastnem tisku. a ij a ji Transponirana matrika Prva vrstica matrike postane prvi stolpec, druga vrstica drugi stolpec itd. 3 7 A 5 6 T A ' A B ' B Po transponiranju je red matrike obrnjen (B: x 3 B : 3 x ). VEKTORJI: Tipi matrik m = vrstična matrika (ima samo eno vrstico) n = stolpčna matrika (ima samo en stolpec) r ' s 0 Vektorje označujemo z malimi tiskanimi črkami v mastnem tisku.

3 Tipi matrik Tipi matrik Ničelna matrika ima vse elemente enake ničli Kvadratna matrika: n x n Simetrična matrika (A = A ; pr.: korelacijska matrika) Diagonalna matrika (0 izven diagonale) Spodnja in zgornja trikotna matrika 6 A D Tipi matrik Pogoste matrike v statistiki Kvadratna matrika: n x n Skalarna matrika (diagonalna z enakimi elementi v diagonali) S matrike podatkov Identična matrika (enotska) d = *0+, C = *x+ kvadratna matrika reda 0 0 I Iz: Care (998) Predpostavka: neodvisni podatki Pogoste matrike v statistiki matrike aritmetičnih sredin M M M M 3 matrike standardnih deviacij σ σ 0 S 0 0 σn Pogoste matrike v statistiki kovariančne matrike cov cov covn σ cov cov n cov cov cov n cov σ covn C covn covn covnn cov n covn σn korelacijske matrike r R rn r n n r n r r 0 0, R 0 0, 3 0, 0, 3 3

4 Sled matrike Sled (trace) kvadratne matrike je vsota diagonalnih elementov. 3 7 tr Sled matrike Koliko znaša sled v kovariančni matriki? Koliko znaša sled v korelacijski matriki? Operacije z matrikami Seštevanje matrik seštevanje množenje: s skalarjem množenje matrik transponiranje elementarne operacije na matrikah Seštevamo lahko le matrike istega tipa. Če sta matriki A in B istega tipa, je matrika C = A + B istega tipa kot A in kot B. c ij = a ij + b ij Seštevanje matrik Lastnosti seštevanja matrik komutativnost A + B = B + A asociativnost A + (B + C) = (A + B) + C

5 Množenje matrike s skalarjem (Vektorsko) Množenje matrik B ij = λa ij Lastnosti: λ A + B = λa + λb λ + μ A = λa + μa λ μa = λμ A distributivnost asociativnost Matriki A in B lahko pomnožimo samo, če sta poravnani, tj. če ima A toliko stolpcev, kot ima B vrstic. Če je A matrika reda m x k in B matrika reda k x n, je C = AB matrika reda m x n. Množenje v obratnem vrstnem redu da drugačen rezultat!!! Zmnožki nisi A x3 B 3x =C x A 3x B x3 =C 3x istega tipa (reda) Množenje matrik x ' ax b ' cx d x ' a b x x' Ax ' c d x '' x ' ' '' x ' ' x'' = Bx' x'' = B(Ax) = BAx x '' x ' a b x '' ' c d Množenje matrik x '' ( ax b) ( cx d) ( a c) x ( b d) '' ( ax b) ( cx d) ( a c) x ( b d) x '' a c b d x a c b d '' a c b d BA a c b d Množenje matrik Množenje matrik V naslednjem primeru so zmnožki istega tipa (reda), a niso enaki: Vendar pa je sled, tr(a), oz. vsota diagonalnih elementov v kvadratnih matrikah, enaka v AB in BA. A je postmultiplicirana (množena z desne) z B, oz. B je premultiplicirana (množena z leve) z A. A je premultiplicirana z B, oz. B je postmultiplicirana z A. 5

6 Množenje matrik V tem primeru pa sta oba zmnožka enaka: Lastnosti množenja matrik asociativnost: (AB)C = A(BC) distributivnost : A(B + C) = AB + AC distributivnost: (A + B)C = AC + BC l(ab) = (la)b = A(lB) Toda: Množenje matrik na splošno ni komutativno, AB BA. Identična matrika Operacije na transponiranih matrikah Pri množenju matrik je identična matrika nevtralni element = pri množenju z identično matriko se matrika A ne spremeni. Za vsako matriko tipa m x n drži: Če matrika ni kvadratna, sta enotski matriki glede na množenje z leve in z desne različnega reda. Matrika, za katero je A T = A, je simetrična matrika. Kvadratne matrike imajo enako število vrstic in stolpcev matrike istega reda lahko seštevamo in množimo kvadratna matrika A se imenuje invertibilna ali nesingularna, če obstaja matrika B, pri kateri je AB = I n ali BA = I n ; B je inverzna (obratna) matrika matrike A, tj. A - Torej: AA - = I n ali A - A = I n Kvadratne matrike imajo determinanto. Determinanta matrike Determinanta matrike je število (skalar), definirano z elementi kvadratne matrike. x matrika: x matrika: a a a b det A A ad bc c d

7 Determinanta matrike Determinanta matrike 3 x 3 matrika: a b c det M a b c a b c a b c b c a b c b c a b c b c druge matrike: naj računalnik opravi ta posel Determinanta nam pove, ali so vrstice ali stolpci matrike neodvisni. Det = 0 matrika je singularna: če stolpci/vrstice niso linearno neodvisni (z elementarnimi det operacijami lahko dobimo en stolpec/vrstico iz drugih) če so vsi elementi nekega det stolpca/vrstice enaki 0 Det = 0 inverzna matrika ne obstaja Determinanta določa (determinira), ali ima matrika inverz od tod njeno ime. Determinanta v kovariančnih in korelacijskih matrikah Za kovariančne in korelacijske matrike je determinanta število, ki ga uporabljamo, da izrazimo generalizirano varianco mora biti > 0, da je uporaba matrike smiselna; Correlation matrix is not positive semi definite = Determinanta je 0, če so neke spremenljivke v popolnosti korelirane. Kovariančne matrike, ki imajo majhne determinante, označujejo spremenljivke, ki so redundantne ali visoko korelirane. Moramo biti pozorni, ker so lahko elementi inverzne matrike nenatančno izračunani. Velike determinante matrik kažejo, da so spremenljivke med seboj neodvisne. Za multivariatne statistike so lastnosti determinante zelo pomembne (npr. v multipli regresiji lahko ΔR izrazimo kot razmerje determinant dveh modelov). Inverz matrike V skalarni algebri je inverz nekega števila X število Y, ki, če ga množimo z originalnim številom, da zmnožek (X Y = ili Y X = ). Y = /X oz. X - V matrični algebri je inverz matrike tista matrika, ki, če jo množimo z originalno matriko, da identično matriko (A A - = I ali A - A = I). Da ima matrika inverz, mora biti simetrična in mora imeti determinanto, različno od 0. V nekaterih primerih matrika nima inverza = singularna matrika. Inverz matrike AA - = A - A = I Primer za x matriko: A a det A a a a Inverz matrike za diagonalno matriko: 0 0 / / / /

8 Inverz kovariančne ali korelacijske matrike Za kovariančno in korelacijsko matriko inverz obstaja: če ima več oseb kot spremenljivk in če ima vsaka spremenljivka varianco, večjo od 0, če ni multikolinearnosti spremenljivk (in je torej det > 0). Rang matrike Rang matrike je lahko največ enak manjšemu številu med številom stolpcev in vrstic. Pri matriki 3 x je lahko največ 3. Rang matrike A je maksimalno število linearno neodvisnih vrstičnih ali stolpčnih vektorjev matrike. Rang matrike nam pove, v koliko dimenzijah se vršijo linearne transformacije. Če je rang matrike manjši od n, je njena determinanta 0 in matrika nima inverza. Rang matrike rang = (x 3 = x + x ) rang = (x 3 = 3x, x = x /) 8

UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO. Oddelek za matematiko in računalništvo DIPLOMSKO DELO. Gregor Ambrož

UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO. Oddelek za matematiko in računalništvo DIPLOMSKO DELO. Gregor Ambrož UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO Oddelek za matematiko in računalništvo DIPLOMSKO DELO Gregor Ambrož Maribor, 2010 UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO

More information

Linearna algebra. Bojan Orel. Univerza v Ljubljani

Linearna algebra. Bojan Orel. Univerza v Ljubljani Linearna algebra Bojan Orel 07 Univerza v Ljubljani Fakulteta za računalništvo in informatiko CIP - Kataložni zapis o publikaciji Narodna in univerzitetna knjižnica, Ljubljana 5.64(075.8) OREL, Bojan Linearna

More information

UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO. Oddelek za matematiko in računalništvo MAGISTRSKA NALOGA. Tina Lešnik

UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO. Oddelek za matematiko in računalništvo MAGISTRSKA NALOGA. Tina Lešnik UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO Oddelek za matematiko in računalništvo MAGISTRSKA NALOGA Tina Lešnik Maribor, 2014 UNIVERZA V MARIBORU FAKULTETA ZA NARAVOSLOVJE IN MATEMATIKO

More information

Kode za popravljanje napak

Kode za popravljanje napak UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE KOPER MATEMATIČNE ZNANOSTI MAGISTRSKI ŠTUDIJSKI PROGRAM 2. STOPNJE Aljaž Slivnik Kode za popravljanje napak Magistrska

More information

UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA POLONA ŠENKINC REŠEVANJE LINEARNIH DIFERENCIALNIH ENAČB DRUGEGA REDA S POMOČJO POTENČNIH VRST DIPLOMSKO DELO

UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA POLONA ŠENKINC REŠEVANJE LINEARNIH DIFERENCIALNIH ENAČB DRUGEGA REDA S POMOČJO POTENČNIH VRST DIPLOMSKO DELO UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA POLONA ŠENKINC REŠEVANJE LINEARNIH DIFERENCIALNIH ENAČB DRUGEGA REDA S POMOČJO POTENČNIH VRST DIPLOMSKO DELO LJUBLJANA, 2016 UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA

More information

Multipla korelacija in regresija. Multipla regresija, multipla korelacija, statistično zaključevanje o multiplem R

Multipla korelacija in regresija. Multipla regresija, multipla korelacija, statistično zaključevanje o multiplem R Multipla koelacia in egesia Multipla egesia, multipla koelacia, statistično zaklučevane o multiplem Multipla egesia osnovni model in ačunane paametov Z multiplo egesio napoveduemo vednost kiteia (odvisne

More information

Iskanje najcenejše poti v grafih preko polkolobarjev

Iskanje najcenejše poti v grafih preko polkolobarjev Univerza v Ljubljani Fakulteta za računalništvo in informatiko Veronika Horvat Iskanje najcenejše poti v grafih preko polkolobarjev DIPLOMSKO DELO VISOKOŠOLSKI STROKOVNI ŠTUDIJSKI PROGRAM PRVE STOPNJE

More information

UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA SAŠO ZUPANEC MAX-PLUS ALGEBRA DIPLOMSKO DELO

UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA SAŠO ZUPANEC MAX-PLUS ALGEBRA DIPLOMSKO DELO UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA SAŠO ZUPANEC MAX-PLUS ALGEBRA DIPLOMSKO DELO Ljubljana, 2013 UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA ODDELEK ZA MATEMATIKO IN RAČUNALNIŠTVO SAŠO ZUPANEC Mentor:

More information

UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE. Kvadratne forme nad končnimi obsegi

UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE. Kvadratne forme nad končnimi obsegi UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE Zaključna naloga Kvadratne forme nad končnimi obsegi (Quadratic Forms over Finite Fields) Ime in priimek: Borut

More information

Hadamardove matrike in misija Mariner 9

Hadamardove matrike in misija Mariner 9 Hadamardove matrike in misija Mariner 9 Aleksandar Jurišić, 25. avgust, 2009 J. Hadamard (1865-1963) je bil eden izmed pomembnejših matematikov na prehodu iz 19. v 20. stoletje. Njegova najpomembnejša

More information

Študijska smer Study field. Samost. delo Individ. work Klinične vaje work. Vaje / Tutorial: Slovensko/Slovene

Študijska smer Study field. Samost. delo Individ. work Klinične vaje work. Vaje / Tutorial: Slovensko/Slovene UČNI NAČRT PREDMETA / COURSE SYLLABUS Predmet: Matematika 2 Course title: Mathematics 2 Študijski program in stopnja Study programme and level Univerzitetni študijski program 1.stopnje Fizika First cycle

More information

Reševanje problemov in algoritmi

Reševanje problemov in algoritmi Reševanje problemov in algoritmi Vhod Algoritem Izhod Kaj bomo spoznali Zgodovina algoritmov. Primeri algoritmov. Algoritmi in programi. Kaj je algoritem? Algoritem je postopek, kako korak za korakom rešimo

More information

Massachusetts Institute of Technology Department of Economics Statistics. Lecture Notes on Matrix Algebra

Massachusetts Institute of Technology Department of Economics Statistics. Lecture Notes on Matrix Algebra Massachusetts Institute of Technology Department of Economics 14.381 Statistics Guido Kuersteiner Lecture Notes on Matrix Algebra These lecture notes summarize some basic results on matrix algebra used

More information

Klemen Kregar, Mitja Lakner, Dušan Kogoj KEY WORDS

Klemen Kregar, Mitja Lakner, Dušan Kogoj KEY WORDS G 2014 V ROTACIJA Z ENOTSKIM KVATERNIONOM GEODETSKI VESTNIK letn. / Vol. 58 št. / No. 2 ROTATION WITH UNIT QUATERNION 58/2 Klemen Kregar, Mitja Lakner, Dušan Kogoj UDK: 512.626.824:528 Klasifikacija prispevka

More information

Phys 201. Matrices and Determinants

Phys 201. Matrices and Determinants Phys 201 Matrices and Determinants 1 1.1 Matrices 1.2 Operations of matrices 1.3 Types of matrices 1.4 Properties of matrices 1.5 Determinants 1.6 Inverse of a 3 3 matrix 2 1.1 Matrices A 2 3 7 =! " 1

More information

A matrix over a field F is a rectangular array of elements from F. The symbol

A matrix over a field F is a rectangular array of elements from F. The symbol Chapter MATRICES Matrix arithmetic A matrix over a field F is a rectangular array of elements from F The symbol M m n (F ) denotes the collection of all m n matrices over F Matrices will usually be denoted

More information

. a m1 a mn. a 1 a 2 a = a n

. a m1 a mn. a 1 a 2 a = a n Biostat 140655, 2008: Matrix Algebra Review 1 Definition: An m n matrix, A m n, is a rectangular array of real numbers with m rows and n columns Element in the i th row and the j th column is denoted by

More information

Cveto Trampuž PRIMERJAVA ANALIZE VEČRAZSEŽNIH TABEL Z RAZLIČNIMI MODELI REGRESIJSKE ANALIZE DIHOTOMNIH SPREMENLJIVK

Cveto Trampuž PRIMERJAVA ANALIZE VEČRAZSEŽNIH TABEL Z RAZLIČNIMI MODELI REGRESIJSKE ANALIZE DIHOTOMNIH SPREMENLJIVK Cveto Trampuž PRIMERJAVA ANALIZE VEČRAZSEŽNIH TABEL Z RAZLIČNIMI MODELI REGRESIJSKE ANALIZE DIHOTOMNIH SPREMENLJIVK POVZETEK. Namen tega dela je prikazati osnove razlik, ki lahko nastanejo pri interpretaciji

More information

Matrices and their operations No. 1

Matrices and their operations No. 1 Matrices and their operations No. 1 Multiplication of 2 2 Matrices Nobuyuki TOSE October 11, 2016 Review 1: 2 2 Matrices 2 2 matrices A ( a 1 a 2 ) ( a1 a 2 ) ( ) a11 a 12 a 21 a 22 A 2 2 matrix is given

More information

Statistika 2 z računalniško analizo podatkov

Statistika 2 z računalniško analizo podatkov Statistika 2 z računalniško analizo podatkov Bivariatne analize 1 V Statistične analize v SPSS-ju V.4 Bivariatne analize Analyze - Descriptive statistics - Crosstabs Analyze Correlate Bivariate Analyze

More information

JERNEJ TONEJC. Fakulteta za matematiko in fiziko

JERNEJ TONEJC. Fakulteta za matematiko in fiziko . ARITMETIKA DVOJIŠKIH KONČNIH OBSEGOV JERNEJ TONEJC Fakulteta za matematiko in fiziko Math. Subj. Class. (2010): 11T{06, 22, 55, 71}, 12E{05, 20, 30}, 68R05 V članku predstavimo končne obsege in aritmetiko

More information

ELEMENTARY LINEAR ALGEBRA

ELEMENTARY LINEAR ALGEBRA ELEMENTARY LINEAR ALGEBRA K R MATTHEWS DEPARTMENT OF MATHEMATICS UNIVERSITY OF QUEENSLAND First Printing, 99 Chapter LINEAR EQUATIONS Introduction to linear equations A linear equation in n unknowns x,

More information

Math Camp Lecture 4: Linear Algebra. Xiao Yu Wang. Aug 2010 MIT. Xiao Yu Wang (MIT) Math Camp /10 1 / 88

Math Camp Lecture 4: Linear Algebra. Xiao Yu Wang. Aug 2010 MIT. Xiao Yu Wang (MIT) Math Camp /10 1 / 88 Math Camp 2010 Lecture 4: Linear Algebra Xiao Yu Wang MIT Aug 2010 Xiao Yu Wang (MIT) Math Camp 2010 08/10 1 / 88 Linear Algebra Game Plan Vector Spaces Linear Transformations and Matrices Determinant

More information

Math 313 Chapter 1 Review

Math 313 Chapter 1 Review Math 313 Chapter 1 Review Howard Anton, 9th Edition May 2010 Do NOT write on me! Contents 1 1.1 Introduction to Systems of Linear Equations 2 2 1.2 Gaussian Elimination 3 3 1.3 Matrices and Matrix Operations

More information

Exercise Set Suppose that A, B, C, D, and E are matrices with the following sizes: A B C D E

Exercise Set Suppose that A, B, C, D, and E are matrices with the following sizes: A B C D E Determine the size of a given matrix. Identify the row vectors and column vectors of a given matrix. Perform the arithmetic operations of matrix addition, subtraction, scalar multiplication, and multiplication.

More information

SIMETRIČNE KOMPONENTE

SIMETRIČNE KOMPONENTE Univerza v Ljubljani Fakulteta za elektrotehniko SIMETRIČNE KOMPONENTE Seminarska naloga pri predmetu Razdelilna in industrijska omrežja Poročilo izdelala: ELIZABETA STOJCHEVA Mentor: prof. dr. Grega Bizjak,

More information

1 Multiply Eq. E i by λ 0: (λe i ) (E i ) 2 Multiply Eq. E j by λ and add to Eq. E i : (E i + λe j ) (E i )

1 Multiply Eq. E i by λ 0: (λe i ) (E i ) 2 Multiply Eq. E j by λ and add to Eq. E i : (E i + λe j ) (E i ) Direct Methods for Linear Systems Chapter Direct Methods for Solving Linear Systems Per-Olof Persson persson@berkeleyedu Department of Mathematics University of California, Berkeley Math 18A Numerical

More information

a 11 x 1 + a 12 x a 1n x n = b 1 a 21 x 1 + a 22 x a 2n x n = b 2.

a 11 x 1 + a 12 x a 1n x n = b 1 a 21 x 1 + a 22 x a 2n x n = b 2. Chapter 1 LINEAR EQUATIONS 11 Introduction to linear equations A linear equation in n unknowns x 1, x,, x n is an equation of the form a 1 x 1 + a x + + a n x n = b, where a 1, a,, a n, b are given real

More information

Determinant Worksheet Math 113

Determinant Worksheet Math 113 Determinant Worksheet Math 3 Evaluate: ) 2) 3) 4) 5) 6) 7) 8) 9) 0) ) 2) Answers ) -6 2) 9 3) - 4) 2,520 5) 0 6) 9 7) - 8) 42 9) -32 0) 64 ) 0 2) - X d2d0sl23 JK4uatfar RSFoIf0tswzaGrbeb 6LLL5CXq H 0AHl5lA

More information

Linear Algebra and Matrix Inversion

Linear Algebra and Matrix Inversion Jim Lambers MAT 46/56 Spring Semester 29- Lecture 2 Notes These notes correspond to Section 63 in the text Linear Algebra and Matrix Inversion Vector Spaces and Linear Transformations Matrices are much

More information

Izbrana poglavja iz algebrai ne teorije grafov. Zbornik seminarskih nalog iz algebrai ne teorije grafov

Izbrana poglavja iz algebrai ne teorije grafov. Zbornik seminarskih nalog iz algebrai ne teorije grafov Izbrana poglavja iz algebrai ne teorije grafov Zbornik seminarskih nalog iz algebrai ne teorije grafov Ljubljana, 2015 CIP Kataloºni zapis o publikaciji Narodna in univerzitetna knjiºnica, Ljubljana 519.24(082)(0.034.2)

More information

Matrix operations Linear Algebra with Computer Science Application

Matrix operations Linear Algebra with Computer Science Application Linear Algebra with Computer Science Application February 14, 2018 1 Matrix operations 11 Matrix operations If A is an m n matrix that is, a matrix with m rows and n columns then the scalar entry in the

More information

Chapter 4 - MATRIX ALGEBRA. ... a 2j... a 2n. a i1 a i2... a ij... a in

Chapter 4 - MATRIX ALGEBRA. ... a 2j... a 2n. a i1 a i2... a ij... a in Chapter 4 - MATRIX ALGEBRA 4.1. Matrix Operations A a 11 a 12... a 1j... a 1n a 21. a 22.... a 2j... a 2n. a i1 a i2... a ij... a in... a m1 a m2... a mj... a mn The entry in the ith row and the jth column

More information

ELEMENTARY LINEAR ALGEBRA

ELEMENTARY LINEAR ALGEBRA ELEMENTARY LINEAR ALGEBRA K. R. MATTHEWS DEPARTMENT OF MATHEMATICS UNIVERSITY OF QUEENSLAND Corrected Version, 7th April 013 Comments to the author at keithmatt@gmail.com Chapter 1 LINEAR EQUATIONS 1.1

More information

For comments, corrections, etc Please contact Ahnaf Abbas: Sharjah Institute of Technology. Matrices Handout #8.

For comments, corrections, etc Please contact Ahnaf Abbas: Sharjah Institute of Technology. Matrices Handout #8. Matrices Handout #8 Topic Matrix Definition A matrix is an array of numbers: a a2... a n a2 a22... a 2n A =.... am am2... amn Matrices are denoted by capital letters : A,B,C,.. Matrix size or rank is determined

More information

Iterativne metode podprostorov 2010/2011 Domače naloge

Iterativne metode podprostorov 2010/2011 Domače naloge Iterativne metode podprostorov 2010/2011 Domače naloge Naloge so razdeljene v 6 skupin. Za pozitivno oceno morate rešiti toliko nalog, da bo končna vsota za pozitivno oceno vsaj 8 točk oz. vsaj 10 točk

More information

LISREL. Mels, G. (2006). LISREL for Windows: Getting Started Guide. Lincolnwood, IL: Scientific Software International, Inc.

LISREL. Mels, G. (2006). LISREL for Windows: Getting Started Guide. Lincolnwood, IL: Scientific Software International, Inc. LISREL Mels, G. (2006). LISREL for Windows: Getting Started Guide. Lincolnwood, IL: Scientific Software International, Inc. LISREL: Structural Equation Modeling, Multilevel Structural Equation Modeling,

More information

JUST THE MATHS UNIT NUMBER 9.8. MATRICES 8 (Characteristic properties) & (Similarity transformations) A.J.Hobson

JUST THE MATHS UNIT NUMBER 9.8. MATRICES 8 (Characteristic properties) & (Similarity transformations) A.J.Hobson JUST THE MATHS UNIT NUMBER 9.8 MATRICES 8 (Characteristic properties) & (Similarity transformations) by A.J.Hobson 9.8. Properties of eigenvalues and eigenvectors 9.8. Similar matrices 9.8.3 Exercises

More information

TOPLJENEC ASOCIIRA LE V VODNI FAZI

TOPLJENEC ASOCIIRA LE V VODNI FAZI TOPLJENEC ASOCIIRA LE V VODNI FAZI V primeru asociacij molekul topljenca v vodni ali organski fazi eksperimentalno določeni navidezni porazdelitveni koeficient (P n ) v odvisnosti od koncentracije ni konstanten.

More information

Introduction to Matrix Algebra

Introduction to Matrix Algebra Introduction to Matrix Algebra August 18, 2010 1 Vectors 1.1 Notations A p-dimensional vector is p numbers put together. Written as x 1 x =. x p. When p = 1, this represents a point in the line. When p

More information

Linear Algebra. Matrices Operations. Consider, for example, a system of equations such as x + 2y z + 4w = 0, 3x 4y + 2z 6w = 0, x 3y 2z + w = 0.

Linear Algebra. Matrices Operations. Consider, for example, a system of equations such as x + 2y z + 4w = 0, 3x 4y + 2z 6w = 0, x 3y 2z + w = 0. Matrices Operations Linear Algebra Consider, for example, a system of equations such as x + 2y z + 4w = 0, 3x 4y + 2z 6w = 0, x 3y 2z + w = 0 The rectangular array 1 2 1 4 3 4 2 6 1 3 2 1 in which the

More information

Naloge iz LA T EXa : 3. del

Naloge iz LA T EXa : 3. del Naloge iz LA T EXa : 3. del 1. V besedilo vklju ite naslednjo tabelo skupaj z napisom Kontrolna naloga Dijak 1 2 Povpre je Janko 67 72 70.5 Metka 72 67 70.5 Povpre je 70.5 70.5 Tabela 1: Rezultati kontrolnih

More information

Particija grafa, odkrivanje skupnosti in maksimalen prerez

Particija grafa, odkrivanje skupnosti in maksimalen prerez Univerza na Primorskem Fakulteta za matematiko, naravoslovje in informacijske tehnologije Matemati ne znanosti - 2. stopnja Peter Mur²i Particija grafa, odkrivanje skupnosti in maksimalen prerez Magistrsko

More information

Assignment 10. Arfken Show that Stirling s formula is an asymptotic expansion. The remainder term is. B 2n 2n(2n 1) x1 2n.

Assignment 10. Arfken Show that Stirling s formula is an asymptotic expansion. The remainder term is. B 2n 2n(2n 1) x1 2n. Assignment Arfken 5.. Show that Stirling s formula is an asymptotic expansion. The remainder term is R N (x nn+ for some N. The condition for an asymptotic series, lim x xn R N lim x nn+ B n n(n x n B

More information

Mathematics. EC / EE / IN / ME / CE. for

Mathematics.   EC / EE / IN / ME / CE. for Mathematics for EC / EE / IN / ME / CE By www.thegateacademy.com Syllabus Syllabus for Mathematics Linear Algebra: Matrix Algebra, Systems of Linear Equations, Eigenvalues and Eigenvectors. Probability

More information

Knowledge Discovery and Data Mining 1 (VO) ( )

Knowledge Discovery and Data Mining 1 (VO) ( ) Knowledge Discovery and Data Mining 1 (VO) (707.003) Review of Linear Algebra Denis Helic KTI, TU Graz Oct 9, 2014 Denis Helic (KTI, TU Graz) KDDM1 Oct 9, 2014 1 / 74 Big picture: KDDM Probability Theory

More information

1 The Basics: Vectors, Matrices, Matrix Operations

1 The Basics: Vectors, Matrices, Matrix Operations 14.102, Math for Economists Fall 2004 Lecture Notes, 9/9/2004 These notes are primarily based on those written by George Marios Angeletos for the Harvard Math Camp in 1999 and 2000, and updated by Stavros

More information

UČNI NAČRT PREDMETA / COURSE SYLLABUS. Študijska smer Study field. Samost. delo Individ. work Klinične vaje work

UČNI NAČRT PREDMETA / COURSE SYLLABUS. Študijska smer Study field. Samost. delo Individ. work Klinične vaje work Predmet: Course title: UČNI NAČRT PREDMETA / COURSE SYLLABUS Linearna algebra Linear algebra Študijski program in stopnja Study programme and level Visokošolski strokovni študijski program Praktična matematika

More information

ELEMENTARY LINEAR ALGEBRA

ELEMENTARY LINEAR ALGEBRA ELEMENTARY LINEAR ALGEBRA K R MATTHEWS DEPARTMENT OF MATHEMATICS UNIVERSITY OF QUEENSLAND Second Online Version, December 998 Comments to the author at krm@mathsuqeduau All contents copyright c 99 Keith

More information

Excel. Matjaž Željko

Excel. Matjaž Željko Excel Matjaž Željko Elektronska preglednica Excel Excel je zmogljiv kalkulator. Omogoča izdelavo grafikonov statistično analizo podatkov lepo oblikovanje poročila za natis Podatke predstavljamo tabelarično,

More information

A L A BA M A L A W R E V IE W

A L A BA M A L A W R E V IE W A L A BA M A L A W R E V IE W Volume 52 Fall 2000 Number 1 B E F O R E D I S A B I L I T Y C I V I L R I G HT S : C I V I L W A R P E N S I O N S A N D TH E P O L I T I C S O F D I S A B I L I T Y I N

More information

UČNI NAČRT PREDMETA / COURSE SYLLABUS (leto / year 2017/18) Študijska smer Study field ECTS Vaje / Tutorial: slovenski / Slovene

UČNI NAČRT PREDMETA / COURSE SYLLABUS (leto / year 2017/18) Študijska smer Study field ECTS Vaje / Tutorial: slovenski / Slovene Predmet: Course title: UČNI NAČRT PREDMETA / COURSE SYLLABUS (leto / year 2017/18) Linearna algebra Linear algebra Študijski program in stopnja Study programme and level Visokošolski strokovni študijski

More information

UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE

UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE Zaključna naloga Uporaba logistične regresije za napovedovanje razreda, ko je število enot v preučevanih razredih

More information

Math 4377/6308 Advanced Linear Algebra

Math 4377/6308 Advanced Linear Algebra 2.3 Composition Math 4377/6308 Advanced Linear Algebra 2.3 Composition of Linear Transformations Jiwen He Department of Mathematics, University of Houston jiwenhe@math.uh.edu math.uh.edu/ jiwenhe/math4377

More information

AKSIOMATSKA KONSTRUKCIJA NARAVNIH

AKSIOMATSKA KONSTRUKCIJA NARAVNIH UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA Poučevanje: Predmetno poučevanje ŠPELA ZOBAVNIK AKSIOMATSKA KONSTRUKCIJA NARAVNIH ŠTEVIL MAGISTRSKO DELO LJUBLJANA, 2016 UNIVERZA V LJUBLJANI PEDAGOŠKA FAKULTETA

More information

Linear Algebra M1 - FIB. Contents: 5. Matrices, systems of linear equations and determinants 6. Vector space 7. Linear maps 8.

Linear Algebra M1 - FIB. Contents: 5. Matrices, systems of linear equations and determinants 6. Vector space 7. Linear maps 8. Linear Algebra M1 - FIB Contents: 5 Matrices, systems of linear equations and determinants 6 Vector space 7 Linear maps 8 Diagonalization Anna de Mier Montserrat Maureso Dept Matemàtica Aplicada II Translation:

More information

Permutations and Polynomials Sarah Kitchen February 7, 2006

Permutations and Polynomials Sarah Kitchen February 7, 2006 Permutations and Polynomials Sarah Kitchen February 7, 2006 Suppose you are given the equations x + y + z = a and 1 x + 1 y + 1 z = 1 a, and are asked to prove that one of x,y, and z is equal to a. We

More information

Materials engineering Collage \\ Ceramic & construction materials department Numerical Analysis \\Third stage by \\ Dalya Hekmat

Materials engineering Collage \\ Ceramic & construction materials department Numerical Analysis \\Third stage by \\ Dalya Hekmat Materials engineering Collage \\ Ceramic & construction materials department Numerical Analysis \\Third stage by \\ Dalya Hekmat Linear Algebra Lecture 2 1.3.7 Matrix Matrix multiplication using Falk s

More information

MATH 323 Linear Algebra Lecture 6: Matrix algebra (continued). Determinants.

MATH 323 Linear Algebra Lecture 6: Matrix algebra (continued). Determinants. MATH 323 Linear Algebra Lecture 6: Matrix algebra (continued). Determinants. Elementary matrices Theorem 1 Any elementary row operation σ on matrices with n rows can be simulated as left multiplication

More information

Systems of Algebraic Equations and Systems of Differential Equations

Systems of Algebraic Equations and Systems of Differential Equations Systems of Algebraic Equations and Systems of Differential Equations Topics: 2 by 2 systems of linear equations Matrix expression; Ax = b Solving 2 by 2 homogeneous systems Functions defined on matrices

More information

Review of Linear Algebra

Review of Linear Algebra Review of Linear Algebra Dr Gerhard Roth COMP 40A Winter 05 Version Linear algebra Is an important area of mathematics It is the basis of computer vision Is very widely taught, and there are many resources

More information

A = 3 B = A 1 1 matrix is the same as a number or scalar, 3 = [3].

A = 3 B = A 1 1 matrix is the same as a number or scalar, 3 = [3]. Appendix : A Very Brief Linear ALgebra Review Introduction Linear Algebra, also known as matrix theory, is an important element of all branches of mathematics Very often in this course we study the shapes

More information

Scripture quotations marked cev are from the Contemporary English Version, Copyright 1991, 1992, 1995 by American Bible Society. Used by permission.

Scripture quotations marked cev are from the Contemporary English Version, Copyright 1991, 1992, 1995 by American Bible Society. Used by permission. N Ra: E K B Da a a B a a, a-a- a aa, a a. T, a a. 2009 Ba P, I. ISBN 978-1-60260-296-0. N a a a a a, a,. C a a a Ba P, a 500 a a aa a. W, : F K B Da, Ba P, I. U. S a a a a K Ja V B. S a a a a N K Ja V.

More information

A VERY BRIEF LINEAR ALGEBRA REVIEW for MAP 5485 Introduction to Mathematical Biophysics Fall 2010

A VERY BRIEF LINEAR ALGEBRA REVIEW for MAP 5485 Introduction to Mathematical Biophysics Fall 2010 A VERY BRIEF LINEAR ALGEBRA REVIEW for MAP 5485 Introduction to Mathematical Biophysics Fall 00 Introduction Linear Algebra, also known as matrix theory, is an important element of all branches of mathematics

More information

MATRIX ALGEBRA. or x = (x 1,..., x n ) R n. y 1 y 2. x 2. x m. y m. y = cos θ 1 = x 1 L x. sin θ 1 = x 2. cos θ 2 = y 1 L y.

MATRIX ALGEBRA. or x = (x 1,..., x n ) R n. y 1 y 2. x 2. x m. y m. y = cos θ 1 = x 1 L x. sin θ 1 = x 2. cos θ 2 = y 1 L y. as Basics Vectors MATRIX ALGEBRA An array of n real numbers x, x,, x n is called a vector and it is written x = x x n or x = x,, x n R n prime operation=transposing a column to a row Basic vector operations

More information

Matrix Arithmetic. j=1

Matrix Arithmetic. j=1 An m n matrix is an array A = Matrix Arithmetic a 11 a 12 a 1n a 21 a 22 a 2n a m1 a m2 a mn of real numbers a ij An m n matrix has m rows and n columns a ij is the entry in the i-th row and j-th column

More information

Math 3108: Linear Algebra

Math 3108: Linear Algebra Math 3108: Linear Algebra Instructor: Jason Murphy Department of Mathematics and Statistics Missouri University of Science and Technology 1 / 323 Contents. Chapter 1. Slides 3 70 Chapter 2. Slides 71 118

More information

Univerza na Primorskem FAMNIT, MFI STATISTIKA 2 Seminarska naloga

Univerza na Primorskem FAMNIT, MFI STATISTIKA 2 Seminarska naloga Univerza na Primorskem FAMNIT, MFI STATISTIKA 2 Seminarska naloga Naloge so edini način preverjanja znanja pri predmetu Statistika. Vsaka naloga je vredna 10 točk, natančna pravila ocenjevanja pa so navedena

More information

UČNI NAČRT PREDMETA / COURSE SYLLABUS Numerical linear algebra. Študijska smer Study field. Samost. delo Individ. work Klinične vaje work

UČNI NAČRT PREDMETA / COURSE SYLLABUS Numerical linear algebra. Študijska smer Study field. Samost. delo Individ. work Klinične vaje work Predmet: Course title: UČNI NAČRT PREDMETA / COURSE SYLLABUS Numerična linearna algebra Numerical linear algebra Študijski program in stopnja Study programme and level Univerzitetni študijski program Matematika

More information

Math 54 HW 4 solutions

Math 54 HW 4 solutions Math 54 HW 4 solutions 2.2. Section 2.2 (a) False: Recall that performing a series of elementary row operations A is equivalent to multiplying A by a series of elementary matrices. Suppose that E,...,

More information

10. Linear Systems of ODEs, Matrix multiplication, superposition principle (parts of sections )

10. Linear Systems of ODEs, Matrix multiplication, superposition principle (parts of sections ) c Dr. Igor Zelenko, Fall 2017 1 10. Linear Systems of ODEs, Matrix multiplication, superposition principle (parts of sections 7.2-7.4) 1. When each of the functions F 1, F 2,..., F n in right-hand side

More information

OPTIMIRANJE IZDELOVALNIH PROCESOV

OPTIMIRANJE IZDELOVALNIH PROCESOV OPTIMIRANJE IZDELOVALNIH PROCESOV asist. Damir GRGURAŠ, mag. inž. str izr. prof. dr. Davorin KRAMAR damir.grguras@fs.uni-lj.si Namen vaje: Ugotoviti/določiti optimalne parametre pri struženju za dosego

More information

Chapter 1: Systems of linear equations and matrices. Section 1.1: Introduction to systems of linear equations

Chapter 1: Systems of linear equations and matrices. Section 1.1: Introduction to systems of linear equations Chapter 1: Systems of linear equations and matrices Section 1.1: Introduction to systems of linear equations Definition: A linear equation in n variables can be expressed in the form a 1 x 1 + a 2 x 2

More information

MTH 102A - Linear Algebra II Semester

MTH 102A - Linear Algebra II Semester MTH 0A - Linear Algebra - 05-6-II Semester Arbind Kumar Lal P Field A field F is a set from which we choose our coefficients and scalars Expected properties are ) a+b and a b should be defined in it )

More information

LS.2 Homogeneous Linear Systems with Constant Coefficients

LS.2 Homogeneous Linear Systems with Constant Coefficients LS2 Homogeneous Linear Systems with Constant Coefficients Using matrices to solve linear systems The naive way to solve a linear system of ODE s with constant coefficients is by eliminating variables,

More information

MATH 1140(M12A) Semester I. Ax =0 (1) x 4. x 2. x 3. By using Gaussian Elimination, we obtain the solution

MATH 1140(M12A) Semester I. Ax =0 (1) x 4. x 2. x 3. By using Gaussian Elimination, we obtain the solution MATH 4(M2A) Semester I Homogeneous Systems These are systems of linear equations of the form Ax = () whereais the coefficient matrix and x is the vector of unknowns. Example x 2x 2 4x 3 3x 4 = 2x +x 2

More information

Matrices and Determinants

Matrices and Determinants Chapter1 Matrices and Determinants 11 INTRODUCTION Matrix means an arrangement or array Matrices (plural of matrix) were introduced by Cayley in 1860 A matrix A is rectangular array of m n numbers (or

More information

MATRIČNI POPULACIJSKI MODELI

MATRIČNI POPULACIJSKI MODELI TURK ZAKLJUČNA NALOGA 2014 UNIVERZA NA PRIMORSKEM FAKULTETA ZA MATEMATIKO, NARAVOSLOVJE IN INFORMACIJSKE TEHNOLOGIJE ZAKLJUČNA NALOGA MATRIČNI POPULACIJSKI MODELI LEV TURK UNIVERZA NA PRIMORSKEM FAKULTETA

More information

UČNI NAČRT PREDMETA / COURSE SYLLABUS (leto / year 2017/18) Parcialne diferencialne enačbe Partial differential equations. Študijska smer Study field

UČNI NAČRT PREDMETA / COURSE SYLLABUS (leto / year 2017/18) Parcialne diferencialne enačbe Partial differential equations. Študijska smer Study field Predmet: Course title: UČNI NAČRT PREDMETA / COURSE SYLLABUS (leto / year 2017/18) Parcialne diferencialne enačbe Partial differential equations Študijski program in stopnja Study programme and level Magistrski

More information

CHAPTER 6. Direct Methods for Solving Linear Systems

CHAPTER 6. Direct Methods for Solving Linear Systems CHAPTER 6 Direct Methods for Solving Linear Systems. Introduction A direct method for approximating the solution of a system of n linear equations in n unknowns is one that gives the exact solution to

More information

Chapter 1: Systems of Linear Equations and Matrices

Chapter 1: Systems of Linear Equations and Matrices : Systems of Linear Equations and Matrices Multiple Choice Questions. Which of the following equations is linear? (A) x + 3x 3 + 4x 4 3 = 5 (B) 3x x + x 3 = 5 (C) 5x + 5 x x 3 = x + cos (x ) + 4x 3 = 7.

More information

Mathematics for Computer Science

Mathematics for Computer Science Mathematics for Computer Science w11 Algebra of Matrices matrix definition, geometric interpretation, determinant, inverse, orthogonal, system of linear equations Summary and Figures from : Linear Algebra

More information

Jernej Azarija. Štetje vpetih dreves v grafih

Jernej Azarija. Štetje vpetih dreves v grafih UNIVERZA V LJUBLJANI FAKULTETA ZA RAČUNALNIŠTVO IN INFORMATIKO FAKULTETA ZA MATEMATIKO IN FIZIKO Jernej Azarija Štetje vpetih dreves v grafih DIPLOMSKO DELO NA INTERDISCIPLINARNEM UNIVERZITETNEM ŠTUDIJU

More information

ICS 6N Computational Linear Algebra Matrix Algebra

ICS 6N Computational Linear Algebra Matrix Algebra ICS 6N Computational Linear Algebra Matrix Algebra Xiaohui Xie University of California, Irvine xhx@uci.edu February 2, 2017 Xiaohui Xie (UCI) ICS 6N February 2, 2017 1 / 24 Matrix Consider an m n matrix

More information

Math Camp II. Basic Linear Algebra. Yiqing Xu. Aug 26, 2014 MIT

Math Camp II. Basic Linear Algebra. Yiqing Xu. Aug 26, 2014 MIT Math Camp II Basic Linear Algebra Yiqing Xu MIT Aug 26, 2014 1 Solving Systems of Linear Equations 2 Vectors and Vector Spaces 3 Matrices 4 Least Squares Systems of Linear Equations Definition A linear

More information

ELEMENTARY LINEAR ALGEBRA

ELEMENTARY LINEAR ALGEBRA ELEMENTARY LINEAR ALGEBRA K. R. MATTHEWS DEPARTMENT OF MATHEMATICS UNIVERSITY OF QUEENSLAND Second Online Version, December 1998 Comments to the author at krm@maths.uq.edu.au Contents 1 LINEAR EQUATIONS

More information

x 3y 2z = 6 1.2) 2x 4y 3z = 8 3x + 6y + 8z = 5 x + 3y 2z + 5t = 4 1.5) 2x + 8y z + 9t = 9 3x + 5y 12z + 17t = 7

x 3y 2z = 6 1.2) 2x 4y 3z = 8 3x + 6y + 8z = 5 x + 3y 2z + 5t = 4 1.5) 2x + 8y z + 9t = 9 3x + 5y 12z + 17t = 7 Linear Algebra and its Applications-Lab 1 1) Use Gaussian elimination to solve the following systems x 1 + x 2 2x 3 + 4x 4 = 5 1.1) 2x 1 + 2x 2 3x 3 + x 4 = 3 3x 1 + 3x 2 4x 3 2x 4 = 1 x + y + 2z = 4 1.4)

More information

Statistika 2 z računalniško analizo podatkov. Neizpolnjevanje predpostavk regresijskega modela

Statistika 2 z računalniško analizo podatkov. Neizpolnjevanje predpostavk regresijskega modela Statistika 2 z računalniško analizo podatkov Neizpolnjevanje predpostavk regresijskega modela 1 Predpostavke regresijskega modela (ponovitev) V regresijskem modelu navadno privzamemo naslednje pogoje:

More information

Matrix Algebra Determinant, Inverse matrix. Matrices. A. Fabretti. Mathematics 2 A.Y. 2015/2016. A. Fabretti Matrices

Matrix Algebra Determinant, Inverse matrix. Matrices. A. Fabretti. Mathematics 2 A.Y. 2015/2016. A. Fabretti Matrices Matrices A. Fabretti Mathematics 2 A.Y. 2015/2016 Table of contents Matrix Algebra Determinant Inverse Matrix Introduction A matrix is a rectangular array of numbers. The size of a matrix is indicated

More information

MATH 106 LINEAR ALGEBRA LECTURE NOTES

MATH 106 LINEAR ALGEBRA LECTURE NOTES MATH 6 LINEAR ALGEBRA LECTURE NOTES FALL - These Lecture Notes are not in a final form being still subject of improvement Contents Systems of linear equations and matrices 5 Introduction to systems of

More information

Solutions. Name and surname: Instructions

Solutions. Name and surname: Instructions Uiversity of Ljubljaa, Faculty of Ecoomics Quatitative fiace ad actuarial sciece Probability ad statistics Writte examiatio September 4 th, 217 Name ad surame: Istructios Read the problems carefull before

More information

CS100: DISCRETE STRUCTURES. Lecture 3 Matrices Ch 3 Pages:

CS100: DISCRETE STRUCTURES. Lecture 3 Matrices Ch 3 Pages: CS100: DISCRETE STRUCTURES Lecture 3 Matrices Ch 3 Pages: 246-262 Matrices 2 Introduction DEFINITION 1: A matrix is a rectangular array of numbers. A matrix with m rows and n columns is called an m x n

More information

Matrices. Chapter Definitions and Notations

Matrices. Chapter Definitions and Notations Chapter 3 Matrices 3. Definitions and Notations Matrices are yet another mathematical object. Learning about matrices means learning what they are, how they are represented, the types of operations which

More information

Mathematics I. Exercises with solutions. 1 Linear Algebra. Vectors and Matrices Let , C = , B = A = Determine the following matrices:

Mathematics I. Exercises with solutions. 1 Linear Algebra. Vectors and Matrices Let , C = , B = A = Determine the following matrices: Mathematics I Exercises with solutions Linear Algebra Vectors and Matrices.. Let A = 5, B = Determine the following matrices: 4 5, C = a) A + B; b) A B; c) AB; d) BA; e) (AB)C; f) A(BC) Solution: 4 5 a)

More information

11 a 12 a 13 a 21 a 22 a b 12 b 13 b 21 b 22 b b 11 a 12 + b 12 a 13 + b 13 a 21 + b 21 a 22 + b 22 a 23 + b 23

11 a 12 a 13 a 21 a 22 a b 12 b 13 b 21 b 22 b b 11 a 12 + b 12 a 13 + b 13 a 21 + b 21 a 22 + b 22 a 23 + b 23 Chapter 2 (3 3) Matrices The methods used described in the previous chapter for solving sets of linear equations are equally applicable to 3 3 matrices. The algebra becomes more drawn out for larger matrices,

More information

Math Bootcamp An p-dimensional vector is p numbers put together. Written as. x 1 x =. x p

Math Bootcamp An p-dimensional vector is p numbers put together. Written as. x 1 x =. x p Math Bootcamp 2012 1 Review of matrix algebra 1.1 Vectors and rules of operations An p-dimensional vector is p numbers put together. Written as x 1 x =. x p. When p = 1, this represents a point in the

More information

Osnove numerične matematike

Osnove numerične matematike Univerza v Ljubljani Fakulteta za računalništvo in informatiko Osnove numerične matematike Bojan Orel Ljubljana, 2004 Kazalo 1 Uvod 1 1.1 Zakaj numerične metode..................... 1 1.2 Napake in numerično

More information

CS 246 Review of Linear Algebra 01/17/19

CS 246 Review of Linear Algebra 01/17/19 1 Linear algebra In this section we will discuss vectors and matrices. We denote the (i, j)th entry of a matrix A as A ij, and the ith entry of a vector as v i. 1.1 Vectors and vector operations A vector

More information

Attempt to prepare seasonal weather outlook for Slovenia

Attempt to prepare seasonal weather outlook for Slovenia Attempt to prepare seasonal weather outlook for Slovenia Main available sources (ECMWF, EUROSIP, IRI, CPC.NCEP.NOAA,..) Two parameters (T and RR anomally) Textual information ( Met Office like ) Issued

More information

Linear Algebra Miscellaneous Proofs to Know

Linear Algebra Miscellaneous Proofs to Know Linear Algebra Miscellaneous Proofs to Know S. F. Ellermeyer Summer Semester 2010 Definition 1 An n n matrix, A, issaidtobeinvertible if there exists an n n matrix B such that AB BA I n (where I n is the

More information