What is the integral of x^3e^{x^4+2} ?

The integral of x^3e^{x^4+2} is 1/4 e^{x^4+2}+C

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integral of x^3e^{x^4+2}

\int x^{3} e^{x^{4} + 2} d x

\frac{1}{4} e^{x^{4} + 2} + C

Solution steps

\int x^{3} e^{x^{4} + 2} d x

Apply u-substitution

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

= \int \frac{e ^{u}}{4} d u

Take the constant out:

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

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

Use the common integral:

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

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

Substitute back

u = x^{4} + 2

= \frac{1}{4} e^{x^{4} + 2}

Add a constant to the solution

= \frac{1}{4} e^{x^{4} + 2} + C

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What is the integral of x^3e^{x^4+2} ?
The integral of x^3e^{x^4+2} is 1/4 e^{x^4+2}+C