What is the integral of 1/(xsqrt(x^4-64)) ?

The integral of 1/(xsqrt(x^4-64)) is 1/16 arctan(1/8 sqrt(x^4-64))+C

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integral of 1/(xsqrt(x^4-64))

\int \frac{1}{x x ^{4} - 64} d x

\frac{1}{16} arctan (\frac{1}{8} x^{4} - 64) + C

Solution steps

\int \frac{1}{x x ^{4} - 64} d x

Apply u-substitution

: \int \frac{1}{2 ( u ^{2} + 64 )} d u

= \int \frac{1}{2 ( u ^{2} + 64 )} d u

Take the constant out:

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

= \frac{1}{2} \cdot \int \frac{1}{u ^{2} + 64} d u

Apply Integral Substitution

= \frac{1}{2} \cdot \int \frac{1}{8 ( v ^{2} + 1 )} d v

Take the constant out:

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

= \frac{1}{2} \cdot \frac{1}{8} \cdot \int \frac{1}{v ^{2} + 1} d v

Use the common integral:

\int \frac{1}{v ^{2} + 1} d v = arctan (v)

= \frac{1}{2} \cdot \frac{1}{8} arctan (v)

Substitute back

= \frac{1}{2} \cdot \frac{1}{8} arctan (\frac{x ^{4} - 64}{8})

Simplify

\frac{1}{2} \cdot \frac{1}{8} arctan (\frac{x ^{4} - 64}{8}) : \frac{1}{16} arctan (\frac{1}{8} x^{4} - 64)

= \frac{1}{16} arctan (\frac{1}{8} x^{4} - 64)

Add a constant to the solution

= \frac{1}{16} arctan (\frac{1}{8} x^{4} - 64) + C

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What is the integral of 1/(xsqrt(x^4-64)) ?
The integral of 1/(xsqrt(x^4-64)) is 1/16 arctan(1/8 sqrt(x^4-64))+C