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The eqaution x^(2)+(lambda+mu)xy+lambdam...

The eqaution `x^(2)+(lambda+mu)xy+lambdamuy^(2)+x+muy =0` represent two parallel straight lines if

A

`lambda+mu=0`

B

`lambda=mu`

C

`lambda=2mu`

D

`lambda=4mu`

Text Solution

Verified by Experts

The correct Answer is:
B
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