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The system of linear equations `x+y+z=2,2x+y-z=3, 3x+2y+kz=4` has a unique solution if (A) `k!=0` (B) `-1ltklt1` (C) `-2ltklt2` (D) `k=0`

A

`k ne 0`

B

`-1ltklt1`

C

`-2ltklt2`

D

k = 0

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The correct Answer is:
a
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  12. Let A=[(1,-1,1),(2,1,-3),(1,1,1)] and 10 B=[(4,2,2),(-5,0,alpha),(1,-2...

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  13. Let A=[(0,0,-1),(0,-1,0),(-1,0,0)] Then only correct statement about t...

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  15. If A is a square matrix such that A*(AdjA)=[{:(4,0,0),(0,4,0),(0,0,4):...

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  18. If A is a singular matrix, then A (adj A) is a

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  19. If {:A=[(0,1),(1,0)]:},I is the unit matrix of order 2 and a, b are a...

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  20. If {:A=[(cos theta,-sintheta),(sintheta,costheta)]:}, then which one o...

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