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Find the equation of the parabola with focus F(0, -3) and directrix y = 3.

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Given, focus F(0, -3) and directrix y = 3 or y – 3 = 0.

We know, For directrix with equation y – a = 0 and focus (0, -a), equation of the parabola is: x2 = – 4ay

Here, a = 3

Therefore, equation of parabola: x2 = – 12y

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