Differential Equations
Order and Degree
JEE Main 2019
Grade 12

Question:

The order and degree of the differential equation $\left(\frac{dy}{dx}\right)^3 + \left(\frac{d^2y}{dx^2}\right)^2 = \frac{d^3y}{dx^3}$ are:
(1) order 3, degree 3
(2) order 2, degree 1
(3) order 3, degree 1
(4) order 3, degree 2

Step-by-Step Solution

Key Concept: Identify the highest-order derivative appearing in the equation, and note that the equation is already a polynomial equation in the derivatives — read off the power of that highest derivative.
The detailed step-by-step mathematical proof is available inside the Mathbee app workspace.
Correct Answer: (3)

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