What is the integral of cos(x)*e^x ?

The integral of cos(x)*e^x is (e^xsin(x))/2+(e^xcos(x))/2+C

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integral of cos(x)*e^x

\int cos (x) \cdot e^{x} d x

\frac{e ^{x} sin ( x )}{2} + \frac{e ^{x} cos ( x )}{2} + C

Solution steps

\int cos (x) e^{x} d x

Apply Integration By Parts

: e^{x} sin (x) - \int e^{x} sin (x) d x

= e^{x} sin (x) - \int e^{x} sin (x) d x

Apply Integration By Parts

: - e^{x} cos (x) - \int - e^{x} cos (x) d x

= e^{x} sin (x) - (- e^{x} cos (x) - \int - e^{x} cos (x) d x)

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= e^{x} sin (x) - (- e^{x} cos (x) - (- \int e^{x} cos (x) d x))

Therefore

\int e^{x} cos (x) d x = e^{x} sin (x) - (- e^{x} cos (x) - (- \int e^{x} cos (x) d x))

Isolate

\int e^{x} cos (x) d x

= \frac{e ^{x} sin ( x )}{2} + \frac{e ^{x} cos ( x )}{2}

Add a constant to the solution

= \frac{e ^{x} sin ( x )}{2} + \frac{e ^{x} cos ( x )}{2} + C

\int \frac{5 x}{x ^{2} - 3 x + 2} d x

\int_{0}^{l n (4)} x e^{x} d x

sin (x) + \frac{8}{5} cot (x)

9 y^{^{''}} - y = x e^{\frac{1}{3} x}

\int_{0}^{x} e^{t} - 1 d t

What is the integral of cos(x)*e^x ?
The integral of cos(x)*e^x is (e^xsin(x))/2+(e^xcos(x))/2+C