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The differential equation  $\frac{d^2 y}{dx^2}+\frac{dy}{dx}+\sin y =0$ is:

1. linear
2. non- linear
3. homogeneous
4. of degree two

The differential equation is a non-homogeneous equation.

The degree of a differential equation is the power of the highest order derivative in the equation. Here the degree is 1.

degree is 1 so it should be linear na ???
Yes, you are right. Corrected.

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