diff-equation

Question: The solution of the differential equation $\frac{dy}{dx}+y=\cos x$is



1) $y=\frac{1}{2}(\cos x+\sin x)+c{{e}^{-x}}$
2) $y=\frac{1}{2}(\cos x-\sin x)+c{{e}^{-x}}$
3) $y=\cos x+\sin x+c{{e}^{-x}}$
4) None of these
Solution: Explanation: No Explanation
Linear differential equations

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