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Question
Find the vertex, focus, equation of directrix and length of the latus rectum of the following:
y2 = – 8x
Solution
4a = 8
a = 2
(a) Vertex V(0, 0) = (0, 0)
(b) Focus S(– a, 0) = (– 2, 0)
(c) Equation of the directrix x = a = 2
x – 2 = 0
(d) Length of the latus rectum 4a = 8
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