Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Differential Equations

Question:

In the following differential equation $\frac{d^2y}{dx^2}+x(\frac{dy}{dx})^2=2x^2\log(\frac{d^2y}{dx^2})$ order and degree is:

Options:

order 2, degree 2

order 2, degree not defined

order not defined, degree 2

order 1, degree 2

Correct Answer:

order 2, degree not defined

Explanation:

The correct answer is Option (2) → order 2, degree not defined

Given differential equation: $\frac{d^2y}{dx^2} + x \left(\frac{dy}{dx}\right)^2 = 2x^2 \log\left(\frac{d^2y}{dx^2}\right)$

Step 1: Identify the highest order derivative: $\frac{d^2y}{dx^2}$ → Order = 2

Step 2: Check degree: The highest order derivative appears inside a logarithm → cannot be expressed as a polynomial in $\frac{d^2y}{dx^2}$

Hence, Degree = Not defined

Answer: Order = 2, Degree = Not defined