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NDA2012MathematicsDifferential EquationsActual

Which of the following differential equations is not linear?

Options

  1. Ad^2 y d x^2 +4 y=0
  2. Bx d y d x +y=x^3
  3. C(x-y)^2 d y d x =9
  4. D^2 x d y d x +y= x

Correct answer

A. d^2 y d x^2 +4 y=0

Step-by-step solution

The correct answer is option A.

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