The solution of the differential equation \( \frac{d y}{d x}+y=\cos x \) is
(a) \( y=\frac{1}{2}...
The solution of the differential equation \( \frac{d y}{d x}+y=\cos x \) is
(a) \( y=\frac{1}{2}(\cos x+\sin x)+c e^{-x} \)
(b) \( y=\frac{1}{2}(\cos x-\sin x)+c e^{-x} \)
(c) \( y=\cos x+\sin x+c e^{-x} \)
(d) None of these
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