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Let z be a complex number satisfying z^...

Let z be a complex number satisfying `z^(2) + 2zlambda + 1=0` , where `lambda ` is a parameter which can take any real value.
The roots of this equation lie on a certain circle if

A

`-1lt lambda lt 1`

B

`lambda gt 1`

C

`lambda lt 1`

D

none of these

Text Solution

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The correct Answer is:
A
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