What is the integral of 4/3 e^{4x} ?

The integral of 4/3 e^{4x} is 1/3 e^{4x}+C

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integral of 4/3 e^{4x}

\int \frac{4}{3} e^{4 x} d x

\frac{1}{3} e^{4 x} + C

Solution steps

\int \frac{4}{3} e^{4 x} d x

Take the constant out:

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

= \frac{4}{3} \cdot \int e^{4 x} d x

Apply u-substitution

: \int e^{u} \frac{1}{4} d u

= \frac{4}{3} \cdot \int e^{u} \frac{1}{4} d u

Take the constant out:

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

= \frac{4}{3} \cdot \frac{1}{4} \cdot \int e^{u} d u

Use the common integral:

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

= \frac{4}{3} \cdot \frac{1}{4} e^{u}

Substitute back

u = 4 x

= \frac{4}{3} \cdot \frac{1}{4} e^{4 x}

Simplify

\frac{4}{3} \cdot \frac{1}{4} e^{4 x} : \frac{1}{3} e^{4 x}

= \frac{1}{3} e^{4 x}

Add a constant to the solution

= \frac{1}{3} e^{4 x} + C

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