ParabolaHard
Question
A point on the parabola y2 = 18x at which the ordinate increases at twice the rate of the abscissa is
Options
A.(2, 4)
B.(2, -4)
C.
D.
Solution
Any point be 
; differentiating y2 = 18x
⇒
= 2 (given) ⇒ t = 
⇒ Point is
; differentiating y2 = 18x ⇒
= 2 (given) ⇒ t = ⇒ Point is
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