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The number of real values of lambda for ...

The number of real values of `lambda` for which the system of equations `lambdax + y + z = 0, x-lambday-z = 0, x + y - lambdaz=0` will have nontrivial solution is

A

0,1

B

0,-1

C

0,2

D

0

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The correct Answer is:
D
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