Q. The order and degree of the following differential equation $\left\lbrack 1 + \left( \frac{dy}{dx} \right)^{2} \right\rbrack^{\frac{5}{2}} = \frac{d^{3}y}{dx^{3}}$ are respectively

A) $3,2$
B) $3,10$
C) $2,3$
D) $3,5$
Explanation

(a)
Given, $\left\lbrack 1 + \left( \frac{dy}{dx} \right)^{2} \right\rbrack^{\frac{5}{2}} = \frac{d^{3}y}{dx^{3}}$
$\Rightarrow$ $\left( \frac{d^{3}y}{dx^{3}} \right)^{2} = \left\lbrack 1 + \left( \frac{dy}{dx} \right)^{2} \right\rbrack^{5}$
Here, order=3, degree=2

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

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