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If [[x,1],[-1,-y]]+[[y,1],[3,x]]=[[1,2],...

If `[[x,1],[-1,-y]]+[[y,1],[3,x]]=[[1,2],[2,1]]` , then (x,y) =

A

(1,0)

B

(1,1)

C

(0,1)

D

(4,2)

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The correct Answer is:
A
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HIMALAYA PUBLICATION-MATRICES AND DETERMINANTS-QUESTION BANK
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  2. If A=[[2,3 ],[4,1]], B=[[1,2],[3,1]], then 2 A-3 B is

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  3. If [[x,1],[-1,-y]]+[[y,1],[3,x]]=[[1,2],[2,1]] , then (x,y) =

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  4. If A and B are two square matrices of same order then (A B)^(prime)=

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  6. The matrix [[0, 5,-7], [-5,0,11],[7,-11,0]] is known as

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  7. If in a square matrix A=(a(i j)) we have a(ji)=a(i j) for all i, j the...

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  8. If A= [[4,x+2],[2x-3, x-1]] is symmetric then x=

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  9. If A is a square matrix then A . A^(T) is

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  10. If A+B=[[1,0],[1,1]] and A-2 B=[[-1,1],[0,1]] then A=

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  11. If A=[[-1,2],[-2,1]], B=[[3,4],[2,-1]] and A+2 X=B, then X=

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  12. If A=[(1,-3),(2,k)] and A^(2)-4A+10I=A, then k =

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  13. If 2 A+3 B=[[2,-1,4],[3,2,5]] and A+2 B=[[5,0,3],[1,6,2]] then B=

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