What is the integral of x^3arctan(x^2) ?

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

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integral of x^3arctan(x^2)

\int x^{3} arctan (x^{2}) d x

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

Solution steps

\int x^{3} arctan (x^{2}) d x

Apply Integration By Parts

: \frac{1}{4} x^{4} arctan (x^{2}) - \int \frac{x ^{5}}{2 ( x ^{4} + 1 )} d x

= \frac{1}{4} x^{4} arctan (x^{2}) - \int \frac{x ^{5}}{2 ( x ^{4} + 1 )} d x

\int \frac{x ^{5}}{2 ( x ^{4} + 1 )} d x = \frac{1}{2} (\frac{x ^{2}}{2} - \frac{1}{2} arctan (x^{2}))

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

Add a constant to the solution

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

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