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The condition for the line L x+m y+n=0 t...

The condition for the line `L x+m y+n=0` to be a tangent for `x^(2)=y` is

A

`P^(2)=2 m n`

B

`P^(2)=2 m^(2) n^(2)`

C

`l^(2)=3 m n`

D

`l^(2)=4 m n`

Text Solution

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The correct Answer is:
D
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