What is the integral of ((arctan(x))^8)/(x^2+1) ?

The integral of ((arctan(x))^8)/(x^2+1) is (arctan^9(x))/9+C

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integral of ((arctan(x))^8)/(x^2+1)

\int \frac{( arctan ( x ) ) ^{8}}{x ^{2} + 1} d x

\frac{arctan ^{9} ( x )}{9} + C

Solution steps

\int \frac{( arctan ( x ) ) ^{8}}{x ^{2} + 1} d x

Apply u-substitution

: \int u^{8} d u

= \int u^{8} d u

Apply the Power Rule

: \frac{u ^{9}}{9}

= \frac{u ^{9}}{9}

Substitute back

u = arctan (x)

= \frac{arctan ^{9} ( x )}{9}

Add a constant to the solution

= \frac{arctan ^{9} ( x )}{9} + C

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y^{^{''}} + 6 y^{^{'}} - 27 y = 0

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What is the integral of ((arctan(x))^8)/(x^2+1) ?
The integral of ((arctan(x))^8)/(x^2+1) is (arctan^9(x))/9+C