What is the integral of (x^3)/((2-x^4)^4) ?

The integral of (x^3)/((2-x^4)^4) is 1/(12(2-x^4)^3)+C

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integral of (x^3)/((2-x^4)^4)

\int \frac{x ^{3}}{( 2 - x ^{4} ) ^{4}} d x

\frac{1}{12 ( 2 - x ^{4} ) ^{3}} + C

Solution steps

\int \frac{x ^{3}}{( 2 - x ^{4} ) ^{4}} d x

Apply u-substitution

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

= \int - \frac{1}{4 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 \frac{1}{u ^{4}} d u

Apply the Power Rule

: - \frac{1}{3 u ^{3}}

= - \frac{1}{4} (- \frac{1}{3 u ^{3}})

Substitute back

u = 2 - x^{4}

= - \frac{1}{4} (- \frac{1}{3 ( 2 - x ^{4} ) ^{3}})

Simplify

- \frac{1}{4} (- \frac{1}{3 ( 2 - x ^{4} ) ^{3}}) : \frac{1}{12 ( 2 - x ^{4} ) ^{3}}

= \frac{1}{12 ( 2 - x ^{4} ) ^{3}}

Add a constant to the solution

= \frac{1}{12 ( 2 - x ^{4} ) ^{3}} + C

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What is the integral of (x^3)/((2-x^4)^4) ?
The integral of (x^3)/((2-x^4)^4) is 1/(12(2-x^4)^3)+C