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(-A)^(-1) is always equal to (where A is...

`(-A)^(-1)` is always equal to (where `A` is nth-order square matrix) a. `(-A)^(-1)` b. `-A^(-1)` c. `(-1)^nA^(-1)` d. none of these

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CENGAGE PUBLICATION-MATRICES-All Questions
  1. If A^3=O ,t h e nI+A+A^2 equals a.I-A b. (I+A^1)^(-1) c. (I-A)^(-1) d...

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  2. Evaluate int (1)/((x+1)sqrt(x-2))dx.

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  3. (-A)^(-1) is always equal to (where A is nth-order square matrix) a. (...

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  4. The matrix X for which [[1,-4],[ 3,-2]]X=[[-16-,6],[ 7 ,2]] is a.[[-2,...

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  5. If A=[(0,-tan (alpha/2)),(tan (alpha/2),0)] and I is 2 xx 2 unit matri...

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  6. Let A and B be 3xx3 matrtices of real numbers, where A is symmetric, "...

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  7. If [[a, b],[ c,1-a]] is an idempotent matrix and f(x)=x-x^2 , bc=1/4 ...

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  8. Let x be the solution set of equation A^x=I ,where A+[(0, 1,-1),(4,-3,...

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  9. If A=[[alpha,0],[ 1, 1]] and B=[[1, 0],[ 5, 1]], find the values of al...

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  10. Let a and b be two real numbers such that a > 1, b >1. If A=((a,0),(0,...

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  11. Let f(x)=(1+x)/(1-x) . If A is matrix for which A^3=0,then f(A) is (a)...

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  12. A and B are square matrices and A is non-singular matrix, then (A^(-1)...

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  13. If A is a singular matrix, then adj A is

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  14. The inverse of a diagonal matrix is a. a diagonal matrix              ...

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  15. If P is non-singular matrix, then value of adj(P^(-1)) in terms of P i...

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  16. If adjB=A ,|P|=|Q|=1, then. adj(Q^(-1)B P^(-1)) is a.P Q b. Q A P c...

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  17. If A is non-singular and (A-2I)(A-4I)=0 , then ,1/6A+4/3A^(-1) is equa...

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  18. If A(alpha,beta)=[[cosalpha,sinalpha,0],[-sinalpha,cosalpha,0],[ 0, 0,...

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  19. If A and B are two square matrices such that B=-A^(-1)B A ,t h e n(A+B...

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  20. A=[(1,tan x),(-tan x,1)] and f(x) is defined as f(x)= det. (A^(T)A^(-1...

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