Equation of the tangent at the point \( P(t) \), where \( t \) is any parameter, to the parabola...

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Equation of the tangent at the point \( P(t) \), where \( t \) is any parameter, to the parabola \( \mathrm{y}^{2}=4 \mathrm{ax} \) is
\( P \)
(A) \( \quad y t=x+a t^{2} \)
(B) \( y=x t+a t^{2} \)
W
(C) \( y=t x \)
(D) \( y=t x+\frac{a}{t} \)
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