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

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

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

\int 3 sin (x) e^{c o s (x)} d x

- 3 e^{c o s (x)} + C

Solution steps

\int 3 sin (x) e^{c o s (x)} d x

Take the constant out:

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

= 3 \cdot \int sin (x) e^{c o s (x)} d x

Apply u-substitution

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

Take the constant out:

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

= 3 (- \int e^{u} d u)

Use the common integral:

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

= 3 (- e^{u})

Substitute back

u = cos (x)

= 3 (- e^{c o s (x)})

Simplify

= - 3 e^{c o s (x)}

Add a constant to the solution

= - 3 e^{c o s (x)} + C

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