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A is a point on the parabola y^2=4a x . ...

`A` is a point on the parabola `y^2=4a x` . The normal at A cuts the parabola again at point `Bdot` If `A B` subtends a right angle at the vertex of the parabola, find the slope of `A Bdot`

A

`pm1`

B

`pm sqrt2`

C

`pm(1)/(sqrt2)`

D

`pm2sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
B
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