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NCERT Class XI Mathematics - Conic Sections - Solutions
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Question : 18 of 71
Marks:
+1,
-0
= –8x
Solution:
The given equation of parabola is = –8x, which is of the form = – 4ax. ∴ 4a = 8 ⇒ a = 2 ∴ Coordinates of focus are (–2, 0) Axis of parabola is y = 0 Equation of the directrix is x = 2 ⇒ x – 2 = 0 Length of latus rectum = 4 × 2 = 8.
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