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Standard Equation of Parabola

The equation ...

Question

The equation of the parabola whose vertex and focus lies on the x – axis at distance a and a’ from the origin, is

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Solution

The correct option is A
Equation will be of from $y^{2} = 4 A (x - a)$ , where $A = (a^{^{'}} - a)$
(A is the distance between focus and vertex)
So we get, $y^{2} = 4 (a^{^{'}} - a) (x - a)$

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