Any point be (29t2,9t); differentiating y2=18x ⇒dxdy=y9=t1=2 (given) ⇒t=21.⇒ Point is (89,29)
A point on the parabola y^2=18 x at which the ordinate increases at twice the rate of the abscissa is
JEE Main 2004 — Mathematics Calculus
A point on the parabola y2=18x at which the ordinate increases at twice the rate of the abscissa is
Held on 30 Apr 2004 · Verified 6 Jul 2026.
Options
- A
(2,4)
- B
(2,−4)
- C
(8−9,29)
- D
(89,29)
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