What is the integral of (x^4)/(x^5+1) ?

The integral of (x^4)/(x^5+1) is 1/5 ln|x^5+1|+C

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integral of (x^4)/(x^5+1)

\int \frac{x ^{4}}{x ^{5} + 1} d x

\frac{1}{5} ln x^{5} + 1 + C

Solution steps

\int \frac{x ^{4}}{x ^{5} + 1} d x

Apply u-substitution

: \int \frac{1}{5 u} d u

= \int \frac{1}{5 u} d u

Take the constant out:

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

= \frac{1}{5} \cdot \int \frac{1}{u} d u

Use the common integral:

\int \frac{1}{u} d u = ln (∣ u ∣)

= \frac{1}{5} ln ∣ u ∣

Substitute back

u = x^{5} + 1

= \frac{1}{5} ln x^{5} + 1

Add a constant to the solution

= \frac{1}{5} ln x^{5} + 1 + C

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What is the integral of (x^4)/(x^5+1) ?
The integral of (x^4)/(x^5+1) is 1/5 ln|x^5+1|+C