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If t is the parameter for one end of a f...

If `t` is the parameter for one end of a focal chord of the parabola `y^2 =4ax,` then its length is :

A

`a(t-(1)/(t))`

B

`a(t+(1)/(t))`

C

`a(t-(1)/(t))^2`

D

`a(t+(1)/(t))^2`

Text Solution

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The correct Answer is:
D
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