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Find the focus of parabola with equation y^2=100x.(a) (0, 25)(b) (0, -25)(c) (25, 0)(d) (-25, 0)This question was addressed to me in exam.This intriguing question comes from Conic Sections in division Conic Sections of Mathematics – Class 11

Answer»

The CORRECT choice is (C) (25, 0)

The best explanation: Comparing EQUATION with y^2=4ax.

4a=100 => a=25.

Focus is at (a, 0) i.e. (25, 0).



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