Answer
$$\int (\cos x)e^{\sin x}dx=e^{\sin x}+C$$
Work Step by Step
$$A=\int (\cos x)e^{\sin x}dx$$
We set $u=\sin x$
Then $$du=\cos xdx$$
Therefore, $$A=\int e^udu= e^u+C$$ $$A=e^{\sin x}+C$$
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