If {:A=[(1,2,x),(0,1,0),(0,0,1)]andB=[(1...

If `{:A=[(1,2,x),(0,1,0),(0,0,1)]andB=[(1,-2,y),(0,1,0),(0,0,1)]:}` and `AB=I_3` , then `x + y` equals

A

0

B

`-1`

C

2

D

None of these

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The correct Answer is:

A

If {:A=[(1,2,x),(0,1,0),(0,0,1)]andB=[(1,-2,y),(0,1,0),(0,0,1)]:} and ...
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The inverse of the matrix [(0,0,1),(0,1,0),(1,0,0)] is (A) [(0,0,1),(0...
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If {:A=[(1,2,x),(0,1,0),(0,0,1)]andB=[(1,-2,y),(0,1,0),(0,0,1)]:} and ...
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If A={:[(0,1,0),(1,0,0),(0,0,1)]:}," then "A^(-1)=
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यदि [(1,0,0),(0,0,1),(0,1,0)][(x),(y),(z)]=[(2),(-1),(3)] तो x,y,z ज्ञ...
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If A={:[(1,2,x),(0,1,0),(0,0,1)]:}, B={:[(1,-2,y),(0,1,0),(0,0,1)]:} a...
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যদি A=[[1,2,x],[0,1,0],[0,0,1]] ,B=[[1,-2,y],[0,1,0],[0,0,1]] এবং AB=...
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