Optimal. Leaf size=18 \[ -x+\tan ^{-1}(x)+\log (x)-\frac {1}{2} \log \left (1+x^2\right ) \]
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Rubi [A]
time = 0.02, antiderivative size = 18, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 4, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {1816, 649, 209,
266} \begin {gather*} -\frac {1}{2} \log \left (x^2+1\right )-x+\log (x)+\tan ^{-1}(x) \end {gather*}
Antiderivative was successfully verified.
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Rule 209
Rule 266
Rule 649
Rule 1816
Rubi steps
\begin {align*} \int \frac {1-x^3}{x \left (1+x^2\right )} \, dx &=\int \left (-1+\frac {1}{x}+\frac {1-x}{1+x^2}\right ) \, dx\\ &=-x+\log (x)+\int \frac {1-x}{1+x^2} \, dx\\ &=-x+\log (x)+\int \frac {1}{1+x^2} \, dx-\int \frac {x}{1+x^2} \, dx\\ &=-x+\tan ^{-1}(x)+\log (x)-\frac {1}{2} \log \left (1+x^2\right )\\ \end {align*}
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Mathematica [A]
time = 0.00, size = 18, normalized size = 1.00 \begin {gather*} -x+\tan ^{-1}(x)+\log (x)-\frac {1}{2} \log \left (1+x^2\right ) \end {gather*}
Antiderivative was successfully verified.
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Mathics [A]
time = 1.68, size = 16, normalized size = 0.89 \begin {gather*} -x+\text {ArcTan}\left [x\right ]+\text {Log}\left [x\right ]-\frac {\text {Log}\left [1+x^2\right ]}{2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.08, size = 17, normalized size = 0.94
method | result | size |
default | \(-x +\arctan \left (x \right )+\ln \left (x \right )-\frac {\ln \left (x^{2}+1\right )}{2}\) | \(17\) |
meijerg | \(-x +\arctan \left (x \right )+\ln \left (x \right )-\frac {\ln \left (x^{2}+1\right )}{2}\) | \(17\) |
risch | \(-x +\arctan \left (x \right )+\ln \left (x \right )-\frac {\ln \left (x^{2}+1\right )}{2}\) | \(17\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.35, size = 16, normalized size = 0.89 \begin {gather*} -x + \arctan \left (x\right ) - \frac {1}{2} \, \log \left (x^{2} + 1\right ) + \log \left (x\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.36, size = 16, normalized size = 0.89 \begin {gather*} -x + \arctan \left (x\right ) - \frac {1}{2} \, \log \left (x^{2} + 1\right ) + \log \left (x\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.06, size = 15, normalized size = 0.83 \begin {gather*} - x + \log {\left (x \right )} - \frac {\log {\left (x^{2} + 1 \right )}}{2} + \operatorname {atan}{\left (x \right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.00, size = 18, normalized size = 1.00 \begin {gather*} \ln \left |x\right |-\frac {\ln \left (x^{2}+1\right )}{2}+\arctan x-x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.04, size = 24, normalized size = 1.33 \begin {gather*} \ln \left (x\right )-x+\ln \left (x-\mathrm {i}\right )\,\left (-\frac {1}{2}-\frac {1}{2}{}\mathrm {i}\right )+\ln \left (x+1{}\mathrm {i}\right )\,\left (-\frac {1}{2}+\frac {1}{2}{}\mathrm {i}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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