What is the integral of 8e^{x/2} ?

The integral of 8e^{x/2} is 16e^{x/2}+C

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integral of 8e^{x/2}

\int 8 e^{\frac{x}{2}} d x

16 e^{\frac{x}{2}} + C

Solution steps

\int 8 e^{\frac{x}{2}} d x

Take the constant out:

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

= 8 \cdot \int e^{\frac{x}{2}} d x

Apply u-substitution

= 8 \cdot \int e^{u} \cdot 2 d u

Take the constant out:

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

= 8 \cdot 2 \cdot \int e^{u} d u

Use the common integral:

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

= 8 \cdot 2 e^{u}

Substitute back

u = \frac{x}{2}

= 8 \cdot 2 e^{\frac{x}{2}}

Simplify

= 16 e^{\frac{x}{2}}

Add a constant to the solution

= 16 e^{\frac{x}{2}} + C