Optimal. Leaf size=135 \[ \frac {i \text {Li}_2\left (1-\frac {2}{i a x+1}\right )}{5 a^5}+\frac {3 \tan ^{-1}(a x)}{10 a^5}+\frac {i \cot ^{-1}(a x)^2}{5 a^5}-\frac {2 \log \left (\frac {2}{1+i a x}\right ) \cot ^{-1}(a x)}{5 a^5}-\frac {3 x}{10 a^4}-\frac {x^2 \cot ^{-1}(a x)}{5 a^3}+\frac {x^3}{30 a^2}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {x^4 \cot ^{-1}(a x)}{10 a} \]
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Rubi [A] time = 0.21, antiderivative size = 135, normalized size of antiderivative = 1.00, number of steps used = 14, number of rules used = 9, integrand size = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.900, Rules used = {4853, 4917, 302, 203, 321, 4921, 4855, 2402, 2315} \[ \frac {i \text {PolyLog}\left (2,1-\frac {2}{1+i a x}\right )}{5 a^5}+\frac {x^3}{30 a^2}-\frac {x^2 \cot ^{-1}(a x)}{5 a^3}-\frac {3 x}{10 a^4}+\frac {3 \tan ^{-1}(a x)}{10 a^5}+\frac {i \cot ^{-1}(a x)^2}{5 a^5}-\frac {2 \log \left (\frac {2}{1+i a x}\right ) \cot ^{-1}(a x)}{5 a^5}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {x^4 \cot ^{-1}(a x)}{10 a} \]
Antiderivative was successfully verified.
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Rule 203
Rule 302
Rule 321
Rule 2315
Rule 2402
Rule 4853
Rule 4855
Rule 4917
Rule 4921
Rubi steps
\begin {align*} \int x^4 \cot ^{-1}(a x)^2 \, dx &=\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {1}{5} (2 a) \int \frac {x^5 \cot ^{-1}(a x)}{1+a^2 x^2} \, dx\\ &=\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {2 \int x^3 \cot ^{-1}(a x) \, dx}{5 a}-\frac {2 \int \frac {x^3 \cot ^{-1}(a x)}{1+a^2 x^2} \, dx}{5 a}\\ &=\frac {x^4 \cot ^{-1}(a x)}{10 a}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {1}{10} \int \frac {x^4}{1+a^2 x^2} \, dx-\frac {2 \int x \cot ^{-1}(a x) \, dx}{5 a^3}+\frac {2 \int \frac {x \cot ^{-1}(a x)}{1+a^2 x^2} \, dx}{5 a^3}\\ &=-\frac {x^2 \cot ^{-1}(a x)}{5 a^3}+\frac {x^4 \cot ^{-1}(a x)}{10 a}+\frac {i \cot ^{-1}(a x)^2}{5 a^5}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {1}{10} \int \left (-\frac {1}{a^4}+\frac {x^2}{a^2}+\frac {1}{a^4 \left (1+a^2 x^2\right )}\right ) \, dx-\frac {2 \int \frac {\cot ^{-1}(a x)}{i-a x} \, dx}{5 a^4}-\frac {\int \frac {x^2}{1+a^2 x^2} \, dx}{5 a^2}\\ &=-\frac {3 x}{10 a^4}+\frac {x^3}{30 a^2}-\frac {x^2 \cot ^{-1}(a x)}{5 a^3}+\frac {x^4 \cot ^{-1}(a x)}{10 a}+\frac {i \cot ^{-1}(a x)^2}{5 a^5}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2-\frac {2 \cot ^{-1}(a x) \log \left (\frac {2}{1+i a x}\right )}{5 a^5}+\frac {\int \frac {1}{1+a^2 x^2} \, dx}{10 a^4}+\frac {\int \frac {1}{1+a^2 x^2} \, dx}{5 a^4}-\frac {2 \int \frac {\log \left (\frac {2}{1+i a x}\right )}{1+a^2 x^2} \, dx}{5 a^4}\\ &=-\frac {3 x}{10 a^4}+\frac {x^3}{30 a^2}-\frac {x^2 \cot ^{-1}(a x)}{5 a^3}+\frac {x^4 \cot ^{-1}(a x)}{10 a}+\frac {i \cot ^{-1}(a x)^2}{5 a^5}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {3 \tan ^{-1}(a x)}{10 a^5}-\frac {2 \cot ^{-1}(a x) \log \left (\frac {2}{1+i a x}\right )}{5 a^5}+\frac {(2 i) \operatorname {Subst}\left (\int \frac {\log (2 x)}{1-2 x} \, dx,x,\frac {1}{1+i a x}\right )}{5 a^5}\\ &=-\frac {3 x}{10 a^4}+\frac {x^3}{30 a^2}-\frac {x^2 \cot ^{-1}(a x)}{5 a^3}+\frac {x^4 \cot ^{-1}(a x)}{10 a}+\frac {i \cot ^{-1}(a x)^2}{5 a^5}+\frac {1}{5} x^5 \cot ^{-1}(a x)^2+\frac {3 \tan ^{-1}(a x)}{10 a^5}-\frac {2 \cot ^{-1}(a x) \log \left (\frac {2}{1+i a x}\right )}{5 a^5}+\frac {i \text {Li}_2\left (1-\frac {2}{1+i a x}\right )}{5 a^5}\\ \end {align*}
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Mathematica [A] time = 0.55, size = 95, normalized size = 0.70 \[ \frac {6 \left (a^5 x^5+i\right ) \cot ^{-1}(a x)^2+a x \left (a^2 x^2-9\right )+3 \cot ^{-1}(a x) \left (a^4 x^4-2 a^2 x^2-4 \log \left (1-e^{2 i \cot ^{-1}(a x)}\right )-3\right )+6 i \text {Li}_2\left (e^{2 i \cot ^{-1}(a x)}\right )}{30 a^5} \]
Warning: Unable to verify antiderivative.
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fricas [F] time = 0.65, size = 0, normalized size = 0.00 \[ {\rm integral}\left (x^{4} \operatorname {arccot}\left (a x\right )^{2}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int x^{4} \operatorname {arccot}\left (a x\right )^{2}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.14, size = 233, normalized size = 1.73 \[ \frac {x^{5} \mathrm {arccot}\left (a x \right )^{2}}{5}+\frac {x^{4} \mathrm {arccot}\left (a x \right )}{10 a}-\frac {x^{2} \mathrm {arccot}\left (a x \right )}{5 a^{3}}+\frac {\mathrm {arccot}\left (a x \right ) \ln \left (a^{2} x^{2}+1\right )}{5 a^{5}}+\frac {x^{3}}{30 a^{2}}-\frac {3 x}{10 a^{4}}+\frac {3 \arctan \left (a x \right )}{10 a^{5}}-\frac {i \ln \left (a x -i\right ) \ln \left (a^{2} x^{2}+1\right )}{10 a^{5}}+\frac {i \ln \left (a x -i\right )^{2}}{20 a^{5}}+\frac {i \dilog \left (-\frac {i \left (a x +i\right )}{2}\right )}{10 a^{5}}+\frac {i \ln \left (a x -i\right ) \ln \left (-\frac {i \left (a x +i\right )}{2}\right )}{10 a^{5}}+\frac {i \ln \left (a x +i\right ) \ln \left (a^{2} x^{2}+1\right )}{10 a^{5}}-\frac {i \ln \left (a x +i\right )^{2}}{20 a^{5}}-\frac {i \dilog \left (\frac {i \left (a x -i\right )}{2}\right )}{10 a^{5}}-\frac {i \ln \left (a x +i\right ) \ln \left (\frac {i \left (a x -i\right )}{2}\right )}{10 a^{5}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \frac {1}{20} \, x^{5} \arctan \left (1, a x\right )^{2} - \frac {1}{80} \, x^{5} \log \left (a^{2} x^{2} + 1\right )^{2} + \int \frac {60 \, a^{2} x^{6} \arctan \left (1, a x\right )^{2} + 4 \, a^{2} x^{6} \log \left (a^{2} x^{2} + 1\right ) + 8 \, a x^{5} \arctan \left (1, a x\right ) + 60 \, x^{4} \arctan \left (1, a x\right )^{2} + 5 \, {\left (a^{2} x^{6} + x^{4}\right )} \log \left (a^{2} x^{2} + 1\right )^{2}}{80 \, {\left (a^{2} x^{2} + 1\right )}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int x^4\,{\mathrm {acot}\left (a\,x\right )}^2 \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int x^{4} \operatorname {acot}^{2}{\left (a x \right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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