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NDA 2012
Exam
NDA
Year
2012
Subject
Mathematics
Chapter
Differential Equations

NDA 2012 · Mathematics · Differential Equations

Which of the following differential equations is not linear?

Which of the following differential equations is not linear?

Options

  1. Ad2ydx2+4y=0\frac{d^2 y}{d x^2}+4 y=0
  2. Bxdydx+y=x3x \frac{d y}{d x}+y=x^3
  3. C(x−y)2dydx=9(x-y)^2 \frac{d y}{d x}=9
  4. Dcos⁡2xdydx+y=tan⁡x\cos ^2 x \frac{d y}{d x}+y=\tan x

Correct answer

A. d2ydx2+4y=0\frac{d^2 y}{d x^2}+4 y=0

Step-by-step solution

The correct answer is option A.
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