Any point on the parabola whose focus is \( \mathrm{P} \) \( (0,1) ...

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Any point on the parabola whose focus is
\( \mathrm{P} \) \( (0,1) \) and the directrix is \( x+2=0 \) is given by

W
(1) \( \left(t^{2}+1,2 t-1\right) \)
(2) \( \left(t^{2}+1,2 t+1\right) \)
(3) \( \left(t^{2}, 2 t\right) \)
(4) \( \left(t^{2}-1,2 t+1\right) \)
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