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Find the focus of parabola with equation x^2=100y.(a) (0, 25)(b) (0, -25)(c) (25, 0)(d) (-25, 0)I got this question in a job interview.My doubt stems from Conic Sections in division Conic Sections of Mathematics – Class 11

Answer»

Right choice is (a) (0, 25)

For EXPLANATION I WOULD say: COMPARING equation with x^2=4ay.

4a=100 => a=25.

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



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