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

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

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integral of (arctan^3(x))/(1+x^2)

\int \frac{arctan ^{3} ( x )}{1 + x ^{2}} d x

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

Solution steps

\int \frac{arctan ^{3} ( x )}{1 + x ^{2}} d x

Apply u-substitution

: \int u^{3} d u

= \int u^{3} d u

Apply the Power Rule

: \frac{u ^{4}}{4}

= \frac{u ^{4}}{4}

Substitute back

u = arctan (x)

= \frac{arctan ^{4} ( x )}{4}

Add a constant to the solution

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

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