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The equation of the tangent at the point...

The equation of the tangent at the point P(t) ,wheret is any parameter, to the parabola `y^2 = 4ax` is

A

`yt=x+at^2`

B

`y=xt+at^2`

C

`y=tx`

D

`y=txq//t`

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The correct Answer is:
A
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