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If t(1) and t(2) are parameters of the e...

If `t_(1) and t_(2)` are parameters of the end points of focal chord for the parabola `y^(2)=4ax` then which one is correct ?

A

`t_(1)t_(2)=1`

B

`t_(1)=t_(2)`

C

`t_(1)t_(2)=-1`

D

`t_(1)+t_(2)=-1`

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