\(f{e^x}(\cos x + \sin x)dx = \)

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6 + 3 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

\(f{e^x}(\cos x + \sin x)dx = \)

\({e^x}\cos x + c\)

\({e^x}\sin x + c\)

\( - {e^x}\cos x + c\)

\( - {e^x}\sin x + c\)