Optimal. Leaf size=67 \[ \frac {1}{2} i \operatorname {PolyLog}\left (2,1-\frac {2}{1+i x}\right )+\frac {1}{2} x^2 \tan ^{-1}(x)-\frac {x}{2}+\frac {1}{2} i \tan ^{-1}(x)^2+\frac {1}{2} \tan ^{-1}(x)+\log \left (\frac {2}{1+i x}\right ) \tan ^{-1}(x) \]
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Rubi [A] time = 0.09, antiderivative size = 67, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 8, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.615, Rules used = {4916, 4852, 321, 203, 4920, 4854, 2402, 2315} \[ \frac {1}{2} i \text {PolyLog}\left (2,1-\frac {2}{1+i x}\right )+\frac {1}{2} x^2 \tan ^{-1}(x)-\frac {x}{2}+\frac {1}{2} i \tan ^{-1}(x)^2+\frac {1}{2} \tan ^{-1}(x)+\log \left (\frac {2}{1+i x}\right ) \tan ^{-1}(x) \]
Antiderivative was successfully verified.
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Rule 203
Rule 321
Rule 2315
Rule 2402
Rule 4852
Rule 4854
Rule 4916
Rule 4920
Rubi steps
\begin {align*} \int \frac {x^3 \tan ^{-1}(x)}{1+x^2} \, dx &=\int x \tan ^{-1}(x) \, dx-\int \frac {x \tan ^{-1}(x)}{1+x^2} \, dx\\ &=\frac {1}{2} x^2 \tan ^{-1}(x)+\frac {1}{2} i \tan ^{-1}(x)^2-\frac {1}{2} \int \frac {x^2}{1+x^2} \, dx+\int \frac {\tan ^{-1}(x)}{i-x} \, dx\\ &=-\frac {x}{2}+\frac {1}{2} x^2 \tan ^{-1}(x)+\frac {1}{2} i \tan ^{-1}(x)^2+\tan ^{-1}(x) \log \left (\frac {2}{1+i x}\right )+\frac {1}{2} \int \frac {1}{1+x^2} \, dx-\int \frac {\log \left (\frac {2}{1+i x}\right )}{1+x^2} \, dx\\ &=-\frac {x}{2}+\frac {1}{2} \tan ^{-1}(x)+\frac {1}{2} x^2 \tan ^{-1}(x)+\frac {1}{2} i \tan ^{-1}(x)^2+\tan ^{-1}(x) \log \left (\frac {2}{1+i x}\right )+i \operatorname {Subst}\left (\int \frac {\log (2 x)}{1-2 x} \, dx,x,\frac {1}{1+i x}\right )\\ &=-\frac {x}{2}+\frac {1}{2} \tan ^{-1}(x)+\frac {1}{2} x^2 \tan ^{-1}(x)+\frac {1}{2} i \tan ^{-1}(x)^2+\tan ^{-1}(x) \log \left (\frac {2}{1+i x}\right )+\frac {1}{2} i \text {Li}_2\left (1-\frac {2}{1+i x}\right )\\ \end {align*}
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Mathematica [A] time = 0.03, size = 57, normalized size = 0.85 \[ \frac {1}{2} \left (i \operatorname {PolyLog}\left (2,\frac {x+i}{x-i}\right )+\left (x^2+2 \log \left (-\frac {2 i}{x-i}\right )+1\right ) \tan ^{-1}(x)-x+i \tan ^{-1}(x)^2\right ) \]
Antiderivative was successfully verified.
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IntegrateAlgebraic [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^3 \tan ^{-1}(x)}{1+x^2} \, dx \]
Verification is Not applicable to the result.
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fricas [F] time = 1.02, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {x^{3} \arctan \relax (x)}{x^{2} + 1}, x\right ) \]
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 \[ \int \frac {x^{3} \arctan \relax (x)}{x^{2} + 1}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.33, size = 113, normalized size = 1.69
method | result | size |
risch | \(\frac {i \ln \left (-i x +1\right ) x^{2}}{4}+\frac {\arctan \relax (x )}{2}-\frac {x}{2}-\frac {i \ln \left (\frac {1}{2}+\frac {i x}{2}\right ) \ln \left (-i x +1\right )}{4}+\frac {i \dilog \left (\frac {1}{2}-\frac {i x}{2}\right )}{4}-\frac {i \ln \left (-i x +1\right )^{2}}{8}-\frac {i \ln \left (i x +1\right ) x^{2}}{4}+\frac {i \ln \left (\frac {1}{2}-\frac {i x}{2}\right ) \ln \left (i x +1\right )}{4}-\frac {i \dilog \left (\frac {1}{2}+\frac {i x}{2}\right )}{4}+\frac {i \ln \left (i x +1\right )^{2}}{8}\) | \(113\) |
default | \(\frac {x^{2} \arctan \relax (x )}{2}-\frac {\arctan \relax (x ) \ln \left (x^{2}+1\right )}{2}-\frac {x}{2}+\frac {\arctan \relax (x )}{2}-\frac {i \ln \left (x -i\right ) \ln \left (x^{2}+1\right )}{4}+\frac {i \dilog \left (-\frac {i \left (x +i\right )}{2}\right )}{4}+\frac {i \ln \left (x -i\right ) \ln \left (-\frac {i \left (x +i\right )}{2}\right )}{4}+\frac {i \ln \left (x -i\right )^{2}}{8}+\frac {i \ln \left (x +i\right ) \ln \left (x^{2}+1\right )}{4}-\frac {i \dilog \left (\frac {i \left (x -i\right )}{2}\right )}{4}-\frac {i \ln \left (x +i\right ) \ln \left (\frac {i \left (x -i\right )}{2}\right )}{4}-\frac {i \ln \left (x +i\right )^{2}}{8}\) | \(128\) |
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 \[ \int \frac {x^{3} \arctan \relax (x)}{x^{2} + 1}\,{d x} \]
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 \[ \int \frac {x^3\,\mathrm {atan}\relax (x)}{x^2+1} \,d x \]
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 \[ \int \frac {x^{3} \operatorname {atan}{\relax (x )}}{x^{2} + 1}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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