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Find the value of x for which the matrix...

Find the value of x for which the matrix `A=[(2//x,-1,2),(1,x,2x^(2)),(1,1//x,2)]` is singular.

A

`pm 1`

B

`pm 2`

C

`pm 3`

D

none of these

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A
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MCGROW HILL PUBLICATION-MATRICES-SOLVED EXAMPLES ( LEVEL 1 ( Single Correct Answer Type Questions ) )
  1. If A is an orthogonal matrix, then

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  2. If A = [(1,0,2),(5,1,x),(1,1,1)] is a singular matrix then x is equal ...

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  3. Find the value of x for which the matrix A=[(2//x,-1,2),(1,x,2x^(2)),(...

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  4. If a matrix A is such that 3A^3 +2A^2+5A+I= 0, then A^(-1) is equal to

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  5. If A=[(1,0),(1,1)] and I=[(1,0),(0,1)] then which one of the following...

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  6. If A, B, and C are three square matrices of the same order, then AB=AC...

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  7. If the product of the matrix B=[(2,6,4),(1,0,1),(-1,1,-1)] with a m...

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  8. If omega is a complex cube root of unity then the matrix A = [(1, omeg...

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  9. [{:(,0,1,2),(,1,2,3),(,3,a,1):}],=A^(-1)=[{:(,1//2,-1//2,1//2),(,-4,3,...

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  10. Let A=[[a,b],[c,d]] be a 2xx2 real matrix. If A-alphaI is invertible f...

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  11. If A =[(1,2),(3,4)] then A^(2)-5A equals

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  12. Solve system of linear equations, using matrix method, x y" "+" "2...

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  13. If A^2-A +I = 0, then the inverse of A is: (A) A+I (B) A (C) ...

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  14. Let A=[1-1 1 2 1-3 1 1 1]a n d10 B=[-4 2 2-5 0alpha1 2 3]dot If B is...

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  15. If A=[(a,b),(b,a0] and A^2=[(alpha, beta0,(beta, alpha)] then (A) alph...

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  16. Let omega!=1 be cube root of unity and S be the set of all non-singula...

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  17. If a matrix A is both symmetric and skew-symmetric, then A is a dia...

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  18. Let A = [(2,-1),(3,4)], B = [(5,2),(7,4)] , C = [(2,5),(3,8)] . Let ...

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  19. If A^2 = A, then (I + A)^(4) is equal to

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  20. The matrix A = [(0,0,-7),(0,-7,0),(-7,0,0)] is a

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