Conic Sections Question 530
Question: The equation of the parabola whose vertex and focus lies on the x-axis at distance a and a- from the origin, is
[RPET 2000]
Options:
A) $ y^{2}=4({a}’-a)(x-a) $
B) $ y^{2}=4(a’-a)(x+a) $
C) $ y^{2}=4(a’+a)(x-a) $
D) $ y^{2}=4(a’+a)(x+a) $
Show Answer
Answer:
Correct Answer: A
Solution:
Equation will be of the form $ y^{2}=4A(x-a) $ , where $ A=({a}’-a) $ or $ y^{2}=4({a}’-a)(x-a) $ .