What is the integral of 3cos(x)e^{sin(x)} ?

The integral of 3cos(x)e^{sin(x)} is 3e^{sin(x)}+C

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integral of 3cos(x)e^{sin(x)}

\int 3 cos (x) e^{s i n (x)} d x

3 e^{s i n (x)} + C

Solution steps

\int 3 cos (x) e^{s i n (x)} d x

Take the constant out:

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

= 3 \cdot \int cos (x) e^{s i n (x)} d x

Apply u-substitution

: \int e^{u} d u

= 3 \cdot \int e^{u} d u

Use the common integral:

\int e^{u} d u = e^{u}

= 3 e^{u}

Substitute back

u = sin (x)

= 3 e^{s i n (x)}

Add a constant to the solution

= 3 e^{s i n (x)} + C

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What is the integral of 3cos(x)e^{sin(x)} ?
The integral of 3cos(x)e^{sin(x)} is 3e^{sin(x)}+C