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Integrating factor of differential equation $\cos x \frac{d y}{d x}+y \sin x=1$ is
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The correct answer is:
$\sec x$
$\frac{d y}{d x}+y \tan x=\sec x$
I.F. $=e^{\int \tan x d x}=e^{\log \sec x}=\sec x$
I.F. $=e^{\int \tan x d x}=e^{\log \sec x}=\sec x$
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