What is the integral of e^{2x+y} ?

The integral of e^{2x+y} is 1/2 e^{y+2x}+C

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integral of e^{2x+y}

\int e^{2 x + y} d x

\frac{1}{2} e^{y + 2 x} + C

Solution steps

\int e^{2 x + y} d x

Apply u-substitution

= \int e^{u} \frac{1}{2} d u

Take the constant out:

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

= \frac{1}{2} \cdot \int e^{u} d u

Use the common integral:

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

= \frac{1}{2} e^{u}

Substitute back

u = y + 2 x

= \frac{1}{2} e^{y + 2 x}

Add a constant to the solution

= \frac{1}{2} e^{y + 2 x} + C