1. A 0,,,, : cos. g x x. 2. If f : R R, g : R R are defined by f x 3x 2 ( ( 3, 1 ( ( ) 1 1, ,
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1 If π π π π. A 0,,,, : cos 6 and f A B is a surjection defined by f then find B Given f ( ) cos, f (0) cos(0), f cos, f cos, f cos, f cos Rangeof B,,,,0 g. If f : R R, g : R R are defined by f, ( ) then findi)fog() ii)gof(a-) ( i) Given g( ) ( ii) Given f ( ) g() f (a ) (a ) g() f (a ) 6a 9 f ( g()) f () f (a ) 6a 0 f ( g()) ( ) [ f ( ) ] g( f (a )) g(6a 0) fog() g( f (a )) (6a 0) [ g( ) ] gof (a )) (6a 0a 0). If f ( ), g( ), h( ) for all R, then find ( fo( goh)){ } Given f ( ), g( ), h( ) ( fo( goh)){ } f { g[ h( )]} f { g[ ]} f { }. Find the domain of the real valued function f Given f ( )( )( ) 0,, Domain of ' f ' is R \,, ( )( ) ( )( )( ). If A -,-,0,, and f : A Bis a surjection defined by sol Given f f, then find B. ( ), f (0) 0 0, ( )( ) ) ) ) Rangeof B,,7 f f f f ( (, ( ( ), 7, 6. find thedomainof real valued function f ( ) 9 Given f ( ) 9 but f R ( ) ( )( ) 0 [,] Domain of f is[,]
2 y y y y y ( fog){ y} f { g[ y]} f y y y y y y y y y y 8. find the domain of real valued function f ( ) log e( ) sol Given f. ( ) log e( ) but f R ( ) 0 0 ( )( ) 0 (,) (, ) Domain of f is (,) (, ) 9. If f : Q Qis defined by f for all Qthen find f Given f let f ( ) y f ( y) () y f ( ) y y y () y y f ( y) f ( y) 0. find thedomainof real valued function f ( ) Given f ( ) but f ( ) R 0, 0, 0, 0 [, ] \{0} Domain of f is[,] \{0}. If f : R R is defined by f, thenthis functionis injuction or not? justify? Given f Suppose f ( ) f ( ) f ( ) f ( ) f is injective function. If the function f is defined by Then find the values of f, f.,,., f If, f ( )., f ( ) not define f () () 0. Find the domain of the real valued function f Given f 0 0 ( )( ) 0 (,) Domain of ' f ' is (,)
3 Lower triangular matrices : A square matrices A=[ a ij ] is said to be an lower triangular matrices if a ij =0 when i< j 0. Define skew symmetric matri, If A 0 is a skew symmetric matri, find? 0 skew symmetric matri : a matri' A' is said tobe skew symmetric matri if A A 0 0 Given A 0 T A T If Ais a skew symmetric matri, A A 0 0 ( ) If A 0 0 then finda? Given A 0 0 A 0 0 A I A ( I) A 8I A If A 0, B and X=A+B then find X? 0 Given A 0, B and X=A+B X= 0 X 0 7. Find the adjoint and inverseof the matri 6 8. If A and A 0, then k a b d b d b if A then A, adj A c d ad bc c a c a Given A and A 0 k AA 0 Given A A.6 ( ). A k k 0 0 Adjoint A 8 k 0 0 adj A 6 k k 0 0 A A A 8 k 0 k T find the valueof k?
4 T 0 Given A 0 A Trace : sum of theelements inthe principal diagonal of a square matri T 0 0 AA Given A, Tra( A) ( ) 0. Construct a X matri whose elements are defined by aij i j a a Given that X matri is A a a a a Now aij i j, i,,, j, a () a () 6 a () a () 6 a () 0 0 a () 6 therequired matriis A 0. Find therank of 0 0 Let A. If A. and det A, then find ' ' Given A A 0 [ rows areidentical] 6 det A = ( + )= 7 Take a min or, 0 [ rows areidentical] Rank of A y8. If, find, y, z and a z 6 a 8, y 8 y, z z, a 6 a 0.Define linear combination of vectors? Let a, a, a an are vectors and,, n are scalars. Then the vectors a a a nan is called a linear combination of vectors
5 where A, X y z A (6 ) ( )( ) ( ) 9 0 A 0 Rank of A the given system of equations havetrivial solution only y z 0 6. Define symmetric matri, If A 6 is a symmetric matri, find? 7 symmetric matri : a matri ' A' is said tobe symmetric matriif A T Given A 6 A T If Ais a symmetric matri, A A Find the area of parallelog ram whose diagonals arei j k and i j k Let a i j k, b i j k i j k ab i( 6) j( ) k( 9 ) i j 0k ab ( ) ( ) ( 0) 00 0 the area of parallelog ram whose diagonals are a, b ab.0 sq. units 8. Show that the points whose position vectors a b c, a b c, 7a c are collinear consider a b c 7 0 [ ( 0) ( ) (0 )] a b c (0) a b c 0 given points are collinear 9. Find the unit vector in the direction of i j k T A Given a i j k then a 9 a i j k unit vector inthe directionof a a
6 we have m 0, n m n m n. Find the vector equation of the line passing through the points a i j k and parallel to the vector b i j k The vector equation of the line passing through the points a and parallel to the vector b is r a tb given a i j k and b i j k Theline r i j k t( i j k). If the position vectors of the point s A, B and C are i j k, i j k and 6i j k respectively and AB AC, then find? Given OA i j k, OB i j k and OC 6i j k AB OB OA ( i j k) ( i j k) i j k AC OC OA (6i j k) ( i j k) 8i j k Given AB AC ( i j k) (8i j k) 8. Find the area of the parallelogram having i j and i k as adjacent sides Theareaof the parallelogram ab Given a i j and b i k i j k nowa b 0 i( 0) j( 0) k(0 9) i j 9k 0 ab sq. units. Find the area of the parallelogram having j k and i k as adjacent sides The area of the parallelogram ab Givena j k and b i k i j k nowa b 0 i( 0) j(0 ) k(0 ) i j k 0 ab 9 sq. units. If,, arethe angles madeby the vector i 6 j k with the positive direction of coordinate ais, then find cos,cos,cos? Sol Given a i j k a. 6, ( 6) then cos,cos,cos Find the angle between the vectors a i j k and b i j k We knowthat cos a. b a b giventhat a i j k a and b i j k b ( ) () ( ) () 7 cos
7 given a i j k, b j k and c i j Theline r ( t s)( i j k ) t ( j k ) s( i j ) 8. If a i j k and b i j k then find the projection of b on a? Given a i j k and b i j k b. a (i j k).( i j k) a ( ) ( ) a ( b. a) a the projection of b on a ( i j k ) a 9. Let a i j k and b i j. Find theunit vector inthe directionof a b? Given a i j k and b i j a b ( i j k) ( i j) i j k a b a b theunit vector inthe directionof a b ( i j k) a b 0. If the vectors a i λ j k and b i j k are perpendicular to each other, find λ If a b a. b 0 () ( ) ( ) 0. Find the vector equation of the line joining the points a i j k and b i j k The vector equation of the line joining the points a and b is r ( t) a tb given a i j k and b i j k Theline r ( t) i j k t( i j k). Find the angle between the planes r.(i j k) and r.(i 6 j k) Given planes are r.(i j k) () and r.(i 6 j k) () let be the angle between planes () and () we knowthat cos cos a a b b c c ( a b c )( a b c ). ( ).6. ( ( ) )( 6 ) 6 6 cos cos cos ( )(9 6 ) 6 6. If the vectors λ i j k and λi λ j k are perpendicular to each other, find Givena λ i j k and b λi λ j k a b a. b 0 ( ) ( )( ) ( ) 0 0 ( )( ) 0 or
8 . Find the period of the function f ( ) cos( ) 7 The period of the function cos a is a given f ( ) cos( ) 7 the period of f ( ) 6. If sin,sin and, are acute, then showthat? 0 Givensin sin 0 tan tan tan tan 6 tan( ) tan tan tan 6. 6 tan( ) tan 7. If sin and is not in the first quadrant, find the value of cos? 8. Pr ove that cos 8.cos 8 givensin 0, and is not in the first quadrant L. H. S cos 8.cos lies insec ond quadrant cos is negative [cos 8.cos] we knowthat cos sin [cos(8 ) cos(8 )] cos [cos60 cos6] cos, Hencecos R. H. S 8 cos9 sin 9 9. Pr ovethat cot 6 cos9 sin 9 sin 9 cos9 cos9 sin 9 cos9 tan tan 9 Given tan( 9) tan tan(90 6) cot(6) cos9 sin 9 sin 9 tan.tan 9 cos9 cos9 0. Find the period of the function f ( ) tan( 9 n ) The period of the function tan a is a given f n ( ) tan( 9 ) n( n )(n ) 6 6 the period of f ( ) nn ( )(n ) n( n )(n ) 6 f ( ) tan( n ) tan
9 we knowthat sin cos sin t sin t sin t sin t tan cos t. Find the ma imum and min imum value of cos sin Givencos sin Here a, b, c ma. value c a b ( ) min. value c a b ( ) Find the ma imum and min imum value of cos sin Givencos sin Here a, b, c 0 ma. value c a b min. value c a b E lim inate from a cos, y bsin Given a cos, y bsin y cos, sin a b y a b cos, sin y cos, sin a b y a b a y b cos sin 8 8. Find asin e function whose period as The period of sin ais a given a a a the sine function sin ( ). If A B then prove that ( tan A)( tan B) Given A B tan( A B) tan tan A tan B tan A.tan B tan A tan B tan A.tan B tan A tan B tan A.tan B Adding on both side, we have tan A tan B tan A.tan B tan A tan B( tan A) ( tan A)( tan B) 6. Pr ove that tan 70 tan 0 tan 0 tan60 tan0 7. If tan 0, then showthat We know tan60. tan0 tan(70 0) tan 0 Given tan 0 cot 0 tan 70 tan 0 tan 0 tan60 tan0 tan 70.tan 0 LHS tan60. tan0 tan 70 tan 0 tan 0 tan(60 0) tan 0 tan(90 0) cot 0 tan 70.cot 70 tan 70 tan 0 tan 0 cot 0 cot (0) cot 0 tan 70 tan 0 tan 0
10 Giventhat sin h 9. If cos sin cos, we knowthat cosh sinh 9 cosh cosh cosh( ) sinh sinh( ) sinh.cosh If cosh, then find the values of cosh( ),sinh( ) Givencosh we knowthat cosh sinh sinh cosh sinh sinh 6 nowcosh( ) cosh sinh and sinh( ) sinh. cosh.. 6. P. T cosh sinh cosh( n) sinh( n) n e e e e LHS cosh sinh n e e e e cosh sinh n e cosh sinh e RHS cosh( n) sinh( n) n n n e e e e e e e e e n e L. H. S R. H. S n n n n n n n n cosh sinh cosh( n) sinh( n) n n prove that cos sin sin Given cos sin cos sin cos cos sin cos multiplying with on both side sin cos sin sin ( ) cos sin cos sin 60. If sin, where, Evaluate cos givensin and lies insec ound quadrant we know cos sin 9 6 cos cos cos now cos cos cos cos 6 cos 6 00 cos 6. Showthat tan h loge Weknowthat tanh ( ) loge tanh log e loge 6. If sinh showthat log 0 sol We knowthat. sinh loge given that sinh sinh e e log log 0 e
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