BACHELOR'S DEGREE PROGRAMME (BDP) Term-End Examination December, Time : 2 hours Maximum Marks : 50 (Weightage : 70%)
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1 01287 No. of Printed Pages : 12 MTE-10 BACHELOR'S DEGREE PROGRAMME (BDP) Term-End Examination December, 2014 ELECTIVE COURSE : MATHEMATICS MTE-10 : NUMERICAL ANALYSIS Time : 2 hours Maximum Marks : 50 (Weightage : 70%) Note : Answer any five questions. All computations may be done upto 3 decimal places. Use of calculators is not allowed. 1. (a) Obtain a second degree polynomial approximation to f(x) = (1 + x)1i2 over the interval [0, 1] by means of the Taylor series expansion about x = 0. Obtain a bound of the error. 2 (b) Use the Lagrange's interpolation formula to calculate f(3) from the following table : 3 x f(x) MTE-10 1 P.T.O.
2 (c) Using Gauss Jordan method with pivoting, solve the system of equations : 5 x1 + x2 + x3 = 1 4x1 + 3x2 x3 = 6 3x 1 + 5x 2 + ax 3 = 4 2. (a) The value of lit is being obtained using the iteration scheme x n+1 [1. + a = 2 xn 2 Find the order of convergence of the method. 5 (b) A particle is moving along a straight line. The displacement x of the particle at some time instances t are given below : t x Find the velocity and acceleration of the particle at t = 4. 5 MTE-1 0 2
3 3. (a) Find the solution of the system of equations : 6x 1 + 2x 2 - x 3 = 3 x1 + 3x2 + 2x3 = 3 x1-3x2 + 5x3 = 0 using three iterations of Gauss - Seidel method. Assume the initial approximation as x(13) = 0.3, x( ) 2 = 0.6 x(0) 3 = Find the iteration matrix and hence find the rate of convergence of the method. 6 (b) Evaluate using Simpson's rule with h = 2 and 1. Improve the result using Romberg integration (a) For the following data, interpolate at x = 0.25 using forward difference polynomial : 5 x f(x) MTE P.T.O.
4 (b) Estimate the eigenvalues of the matrix using the Gerschgorin bound. Draw a rough sketch of the region where the eigenvalues lie (a) For the method 1 3 f(x0) + 4 f(x0 + h) - f(xo + 2h)) f = 2h determine the optimal value of h based on the criteria : max Truncation error I = max I Round-off error I when f(x) = x < 2 and the 1 + x maximum round-off error in evaluating f(x) is (b) Locate the smallest negative root in the magnitude of the equation x2 - x - 1 = 0 in an interval of length 1. Taking the end points of this interval as the initial approximation x0, x1 perform two iterations using Regula - Falsi method. 4 MTE-10 4
5 6. (a) The initial value problem y'= t2 +y, Y(1)= 2 is given. Find y(1.4) for two values of h i.e. h = 0.2 and h = 0.1, using Euler's method and extrapolate the value of y(1.4). (b) Locate the negative real root of the smallest magnitude, in an interval of length one unit of the equation 3x3 + 8x2 + 8x + 5 = 0. Taking the mid-point of this interval as the initial approximation iterate twice using the Birge Vieta method. 7. (a) The following data values for finding an approximation to f"(0.3) are given : x f(x) Using the central difference formula of 0(h2), find approximations to f"(0.3) with h = 0.2 and h = 0.1. Hence, find an improved estimate using extrapolation. MTE-10 5 P.T.O.
6 (b) Determine the spacing h in a table of equally spaced values for the function f(x) = (2 + x)4, 1 x 5 2, so that quadratic interpolation in this table satisfies error I _ (c) Using synthetic division find r(3) where f(x) = x6-3x4 + 2x MTE-10 6
7 7g.t.f.-10 timer) 3 cm st)44 ) TrIta triivr fkitrtt, *;asicri 41ZIS1iN : -ITRIT-4 : qui FI727 : 2 Eiri 377c V : 50 (56e1 W : 70%) 47\ : f4;:e Try yr / F 21, 6,7 F W R-027 ffehd.1<yriej NOT 95(.? aryga qēt* 1. (*) x = o* 3t-duR to, 1] 4 f(x) = (1 + x)1/2 Icflq TIM tifcbdi?ot f Aitt TZT 3M4 *If-4R I1ft *r trft-41t *Tff *If* I 2 omia atd4qr TT1 PHRIRsm -rf"o*-r (at** 4 f(3) 14kchRid lr : 3 x f(x) MTE-10 7 P.T.O.
8 0-0 -gru failt PH (.1 torla,kul Peniti *A7 : x1 + x2 + x3 = 1 4x1 + 3x2 x3 = 6 3x 1 + 5x 2 + 3x 3 = 4 2. TITIfW x n+1-1 x giu 2 n 1 + a 2 x n 311:F TRIT I WO 13*TERuT :14R I 5 (ii) -trr Tittfr 1-grr Trftql-4 t 11h0 t eft f41-9-trer x 41.d Rtil Trzrr : t x t = 4 TR WTI atrc lu I Vci *INR I 5 MTE-10 8
9 3. -51r&-* 4 ) = 0.3, x2) = 0.6, x( 3 0) = 0.3 1TR Ca -NRr tq +1 cbt chtui Pthiti 6x1 + 2x2 x3 = 3 x1 + 3x2 + 2x3 = 3 x1 3x2 + 5x3 = 0 cif c' Ti c *rf* f4rt *r 39-up atrro atfiigkvr 7 ;no *.tra I h = 2 311K 1 RTP:ER- P411-1 "grt 5 dx cif 1:FTR va "a* I ti4-el' 1 + x 2 1 kv-11,410.1 TTT trititdt VW tfa I 4 4. (W) clizslci 3fṯ41 RwR, aigtat TIEfq uti)ai 'b4 x = 0.25 ZRTi Ati* : 5 x f(x) MTE-10 9 P.T.O.
10 NO 1R it -1 tift4tt 1 2 atraf * atittffrriq 31T rfd 4=rf-4R -3-{4 (crycal c(slai) -4m-47 Tie arftritr i t I 5 5. f4fir {- 3 f(x0) + 4 f(xo + h) - f(x0 + 2h)} fi(x )= 2h * 1-C.R Pichti max I t"s'ilit I = max I 14-*-Zqlft ctk h Tirq Alf* 7-0-W 1 f(x) = 1 x 2 3* fkx) * 311--Fq 1+x' ATTffict -ftwe'q-ift t I 6-1:Erft 1 cliel akta til-fictaul x2 - x - 1 = 0 T 1:ft-grg tifs1 old Unc1. cb+.11 ;11c1 PA I'Ff *Me * R C33 (-Gicne.-1 x0, xl 1-11-lcbk RraIT -PA fett t MTE i atit
11 6. (") atrzrak TKT h ITT k h = 0.2 h = 0.1 ct:ht 31TR TER 'WIRT y'=t2 +y, y(1)=2 * rcer y(1.4) TM. *t* * y(1.4)* IfT4 Ata47 '*I 5 ti&fichtul 3x3 + 8x2 + 8x + 5 = 0 * mchch 1:errt *TM' -14f-drr Nforiur am! ciii.ach TO. Tff *IṖAR I 'PT *UR * wit i Act) tgchdi Wt '44 trnr I 5 7. M f"(0.3) * atkt -RR : x f(x) (h2)**-414 aifft '17 cbt4 h = 0.2 h = 01 * 'N7 f"(0.3) tgcbe.-i Ti c tr7r I 33-ff:, 6ff.07r-4 f4fit -smq- RR- TTR trf4r 5 MTE P.T.O.
12 (II) 4,0- f(x) = (2 + x)4, 1 5 x < 2 TIRO 1:11-4 h Tff *IP4R ft:r4 wrpow wrrew facfle4 i=rm 3i-d-447 IftI< lo- 6 ~ig~ a,tait I 3 titqc IWITW W-51z4IT cbt fs(3) Wff tin f(x) = x5 3x4 + 2x MTE ,500
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