Optimal. Leaf size=29 \[ -\frac{x}{2 \left (x^2+1\right )}+\frac{1}{2} \log \left (x^2+1\right )-\frac{1}{2} \tan ^{-1}(x) \]
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Rubi [A] time = 0.0137334, antiderivative size = 29, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.286, Rules used = {1814, 635, 203, 260} \[ -\frac{x}{2 \left (x^2+1\right )}+\frac{1}{2} \log \left (x^2+1\right )-\frac{1}{2} \tan ^{-1}(x) \]
Antiderivative was successfully verified.
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Rule 1814
Rule 635
Rule 203
Rule 260
Rubi steps
\begin{align*} \int \frac{-1+x+x^3}{\left (1+x^2\right )^2} \, dx &=-\frac{x}{2 \left (1+x^2\right )}-\frac{1}{2} \int \frac{1-2 x}{1+x^2} \, dx\\ &=-\frac{x}{2 \left (1+x^2\right )}-\frac{1}{2} \int \frac{1}{1+x^2} \, dx+\int \frac{x}{1+x^2} \, dx\\ &=-\frac{x}{2 \left (1+x^2\right )}-\frac{1}{2} \tan ^{-1}(x)+\frac{1}{2} \log \left (1+x^2\right )\\ \end{align*}
Mathematica [A] time = 0.0114483, size = 25, normalized size = 0.86 \[ \frac{1}{2} \left (-\frac{x}{x^2+1}+\log \left (x^2+1\right )-\tan ^{-1}(x)\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.006, size = 24, normalized size = 0.8 \begin{align*} -{\frac{x}{2\,{x}^{2}+2}}-{\frac{\arctan \left ( x \right ) }{2}}+{\frac{\ln \left ({x}^{2}+1 \right ) }{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.48918, size = 31, normalized size = 1.07 \begin{align*} -\frac{x}{2 \,{\left (x^{2} + 1\right )}} - \frac{1}{2} \, \arctan \left (x\right ) + \frac{1}{2} \, \log \left (x^{2} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.45813, size = 90, normalized size = 3.1 \begin{align*} -\frac{{\left (x^{2} + 1\right )} \arctan \left (x\right ) -{\left (x^{2} + 1\right )} \log \left (x^{2} + 1\right ) + x}{2 \,{\left (x^{2} + 1\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.111065, size = 20, normalized size = 0.69 \begin{align*} - \frac{x}{2 x^{2} + 2} + \frac{\log{\left (x^{2} + 1 \right )}}{2} - \frac{\operatorname{atan}{\left (x \right )}}{2} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.11213, size = 31, normalized size = 1.07 \begin{align*} -\frac{x}{2 \,{\left (x^{2} + 1\right )}} - \frac{1}{2} \, \arctan \left (x\right ) + \frac{1}{2} \, \log \left (x^{2} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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