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

The integral of 5/(x*sqrt(x^5+4)) is -1/2 ln|(sqrt(x^5+4))/2+1|+1/2 ln|(sqrt(x^5+4))/2-1|+C

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integral of 5/(x*sqrt(x^5+4))

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

- \frac{1}{2} ln \frac{x ^{5} + 4}{2} + 1 + \frac{1}{2} ln \frac{x ^{5} + 4}{2} - 1 + C

Solution steps

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

Take the constant out:

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

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

Apply u-substitution

: \int \frac{1}{5 u u + 4} d u

= 5 \cdot \int \frac{1}{5 u u + 4} d u

Take the constant out:

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

= 5 \cdot \frac{1}{5} \cdot \int \frac{1}{u u + 4} d u

Apply u-substitution

: \int \frac{2}{v ^{2} - 4} d v

= 5 \cdot \frac{1}{5} \cdot \int \frac{2}{v ^{2} - 4} d v

Take the constant out:

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

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \int \frac{1}{v ^{2} - 4} d v

Apply Integral Substitution

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \int \frac{1}{2 ( w ^{2} - 1 )} d w

Take the constant out:

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

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \frac{1}{2} \cdot \int \frac{1}{w ^{2} - 1} d w

Factor

w^{2} - 1 : - (- w^{2} + 1)

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \frac{1}{2} \cdot \int \frac{1}{- ( - w ^{2} + 1 )} d w

Take the constant out:

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

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \frac{1}{2} (- \int \frac{1}{- w ^{2} + 1} d w)

Use the common integral:

\int \frac{1}{- w ^{2} + 1} d w = \frac{ln ∣ w + 1 ∣}{2} - \frac{ln ∣ w - 1 ∣}{2}

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \frac{1}{2} (- (\frac{ln ∣ w + 1 ∣}{2} - \frac{ln ∣ w - 1 ∣}{2}))

Substitute back

= 5 \cdot \frac{1}{5} \cdot 2 \cdot \frac{1}{2} - \frac{ln \frac{x ^{5} + 4}{2} + 1}{2} - \frac{ln \frac{x ^{5} + 4}{2} - 1}{2}

Simplify

5 \cdot \frac{1}{5} \cdot 2 \cdot \frac{1}{2} - \frac{ln \frac{x ^{5} + 4}{2} + 1}{2} - \frac{ln \frac{x ^{5} + 4}{2} - 1}{2} : - \frac{1}{2} ln \frac{x ^{5} + 4}{2} + 1 + \frac{1}{2} ln \frac{x ^{5} + 4}{2} - 1

= - \frac{1}{2} ln \frac{x ^{5} + 4}{2} + 1 + \frac{1}{2} ln \frac{x ^{5} + 4}{2} - 1

Add a constant to the solution

= - \frac{1}{2} ln \frac{x ^{5} + 4}{2} + 1 + \frac{1}{2} ln \frac{x ^{5} + 4}{2} - 1 + C

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What is the integral of 5/(x*sqrt(x^5+4)) ?
The integral of 5/(x*sqrt(x^5+4)) is -1/2 ln|(sqrt(x^5+4))/2+1|+1/2 ln|(sqrt(x^5+4))/2-1|+C