MCQ
The third order differential equation is ______
  • A
    $y'y" + y = sin x$
  • B
    $\left(y^{\prime}\right)^3=y$
  • C
    $y^{\prime 2}+x=y^2$
  • $y"' + y" + y = 0$

Answer

Correct option: D.
$y"' + y" + y = 0$
D

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