Q. If $x = \frac{2at}{1 + t^{3}}\ and\ y = \frac{2at^{2}}{\left( 1 + t^{3} \right)^{2}},\ then\frac{dy}{dx}\$is

A) $ax$
B) $a^{2}x^{2}$
C) $\frac{x}{a}$
D) $\frac{x}{2a}$
Explanation

(c)
$\because\ x = \frac{2at}{1 + t^{3}}\ \ and\ \ y = \frac{2{at}^{2}}{\left( 1 + t^{3} \right)^{2}}$
$\therefore 2ay = x^{2}$
$\Rightarrow \frac{dy}{dx} = \frac{x}{a}$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.