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The equation of normal to the ellipse x^...

The equation of normal to the ellipse `x^(2)+4y^(2)=9` at the point wherr ithe eccentric angle is `pi//4` is

A

`4x-2y=9`

B

`4 sqrt(2)x-2 sqrt(2)y=9`

C

`4 sqrt(2x)-- sqrt(2 y)= 9`

D

none of these

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The correct Answer is:
B
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