Integrand size = 10, antiderivative size = 41 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\frac {x^4}{12 a}+\frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right )-\frac {\log \left (1+a^2 x^4\right )}{12 a^3} \]
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Time = 0.02 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.300, Rules used = {4947, 272, 45} \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=-\frac {\log \left (a^2 x^4+1\right )}{12 a^3}+\frac {x^4}{12 a}+\frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right ) \]
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Rule 45
Rule 272
Rule 4947
Rubi steps \begin{align*} \text {integral}& = \frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right )+\frac {1}{3} a \int \frac {x^7}{1+a^2 x^4} \, dx \\ & = \frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right )+\frac {1}{12} a \text {Subst}\left (\int \frac {x}{1+a^2 x} \, dx,x,x^4\right ) \\ & = \frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right )+\frac {1}{12} a \text {Subst}\left (\int \left (\frac {1}{a^2}-\frac {1}{a^2 \left (1+a^2 x\right )}\right ) \, dx,x,x^4\right ) \\ & = \frac {x^4}{12 a}+\frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right )-\frac {\log \left (1+a^2 x^4\right )}{12 a^3} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\frac {x^4}{12 a}+\frac {1}{6} x^6 \cot ^{-1}\left (a x^2\right )-\frac {\log \left (1+a^2 x^4\right )}{12 a^3} \]
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Time = 0.24 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.95
method | result | size |
parallelrisch | \(-\frac {-2 x^{6} \operatorname {arccot}\left (a \,x^{2}\right ) a^{3}-a^{2} x^{4}+\ln \left (a^{2} x^{4}+1\right )}{12 a^{3}}\) | \(39\) |
default | \(\frac {x^{6} \operatorname {arccot}\left (a \,x^{2}\right )}{6}+\frac {a \left (\frac {x^{4}}{4 a^{2}}-\frac {\ln \left (a^{2} x^{4}+1\right )}{4 a^{4}}\right )}{3}\) | \(40\) |
parts | \(\frac {x^{6} \operatorname {arccot}\left (a \,x^{2}\right )}{6}+\frac {a \left (\frac {x^{4}}{4 a^{2}}-\frac {\ln \left (a^{2} x^{4}+1\right )}{4 a^{4}}\right )}{3}\) | \(40\) |
risch | \(\frac {i x^{6} \ln \left (i a \,x^{2}+1\right )}{12}-\frac {i x^{6} \ln \left (-i a \,x^{2}+1\right )}{12}+\frac {\pi \,x^{6}}{12}+\frac {x^{4}}{12 a}-\frac {\ln \left (-a^{2} x^{4}-1\right )}{12 a^{3}}\) | \(64\) |
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Time = 0.28 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.95 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\frac {2 \, a^{3} x^{6} \operatorname {arccot}\left (a x^{2}\right ) + a^{2} x^{4} - \log \left (a^{2} x^{4} + 1\right )}{12 \, a^{3}} \]
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Time = 0.36 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.95 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\begin {cases} \frac {x^{6} \operatorname {acot}{\left (a x^{2} \right )}}{6} + \frac {x^{4}}{12 a} - \frac {\log {\left (a^{2} x^{4} + 1 \right )}}{12 a^{3}} & \text {for}\: a \neq 0 \\\frac {\pi x^{6}}{12} & \text {otherwise} \end {cases} \]
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Time = 0.21 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.93 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\frac {1}{6} \, x^{6} \operatorname {arccot}\left (a x^{2}\right ) + \frac {1}{12} \, {\left (\frac {x^{4}}{a^{2}} - \frac {\log \left (a^{2} x^{4} + 1\right )}{a^{4}}\right )} a \]
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Time = 0.27 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.98 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\frac {1}{6} \, x^{6} \arctan \left (\frac {1}{a x^{2}}\right ) + \frac {1}{12} \, {\left (\frac {x^{4}}{a^{2}} - \frac {\log \left (a^{2} x^{4} + 1\right )}{a^{4}}\right )} a \]
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Time = 0.77 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.85 \[ \int x^5 \cot ^{-1}\left (a x^2\right ) \, dx=\frac {x^6\,\mathrm {acot}\left (a\,x^2\right )}{6}-\frac {\ln \left (a^2\,x^4+1\right )}{12\,a^3}+\frac {x^4}{12\,a} \]
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