conic-section

Question: The vertex of a parabola is the point (a, b) and latus rectum is of length l. If the axis of the parabola is along the positive direction of y¬-axis, then its equation is



1) ${{(x+a)}^{2}}=\frac{l}{2}(2y-2b)$
2) ${{(x-a)}^{2}}=\frac{l}{2}(2y-2b)$
3) ${{(x+a)}^{2}}=\frac{l}{4}(2y-2b)$
4) ${{(x-a)}^{2}}=\frac{l}{8}(2y-2b)$
Solution: Explanation: No Explanation
Parabola

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