Optimal. Leaf size=35 \[ \frac{1}{2} \log \left (x^2+1\right )+\frac{1}{2} x^2 \tan ^{-1}(x)^2+\frac{1}{2} \tan ^{-1}(x)^2-x \tan ^{-1}(x) \]
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Rubi [A] time = 0.0557313, antiderivative size = 35, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 6, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.833, Rules used = {4852, 4916, 4846, 260, 4884} \[ \frac{1}{2} \log \left (x^2+1\right )+\frac{1}{2} x^2 \tan ^{-1}(x)^2+\frac{1}{2} \tan ^{-1}(x)^2-x \tan ^{-1}(x) \]
Antiderivative was successfully verified.
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Rule 4852
Rule 4916
Rule 4846
Rule 260
Rule 4884
Rubi steps
\begin{align*} \int x \tan ^{-1}(x)^2 \, dx &=\frac{1}{2} x^2 \tan ^{-1}(x)^2-\int \frac{x^2 \tan ^{-1}(x)}{1+x^2} \, dx\\ &=\frac{1}{2} x^2 \tan ^{-1}(x)^2-\int \tan ^{-1}(x) \, dx+\int \frac{\tan ^{-1}(x)}{1+x^2} \, dx\\ &=-x \tan ^{-1}(x)+\frac{1}{2} \tan ^{-1}(x)^2+\frac{1}{2} x^2 \tan ^{-1}(x)^2+\int \frac{x}{1+x^2} \, dx\\ &=-x \tan ^{-1}(x)+\frac{1}{2} \tan ^{-1}(x)^2+\frac{1}{2} x^2 \tan ^{-1}(x)^2+\frac{1}{2} \log \left (1+x^2\right )\\ \end{align*}
Mathematica [A] time = 0.0070251, size = 26, normalized size = 0.74 \[ \frac{1}{2} \left (\log \left (x^2+1\right )+\left (x^2+1\right ) \tan ^{-1}(x)^2-2 x \tan ^{-1}(x)\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.009, size = 30, normalized size = 0.9 \begin{align*} -x\arctan \left ( x \right ) +{\frac{ \left ( \arctan \left ( x \right ) \right ) ^{2}}{2}}+{\frac{{x}^{2} \left ( \arctan \left ( x \right ) \right ) ^{2}}{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 = 1.46837, size = 46, normalized size = 1.31 \begin{align*} \frac{1}{2} \, x^{2} \arctan \left (x\right )^{2} -{\left (x - \arctan \left (x\right )\right )} \arctan \left (x\right ) - \frac{1}{2} \, \arctan \left (x\right )^{2} + \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 = 0.523172, size = 81, normalized size = 2.31 \begin{align*} \frac{1}{2} \,{\left (x^{2} + 1\right )} \arctan \left (x\right )^{2} - x \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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Sympy [A] time = 0.351926, size = 29, normalized size = 0.83 \begin{align*} \frac{x^{2} \operatorname{atan}^{2}{\left (x \right )}}{2} - x \operatorname{atan}{\left (x \right )} + \frac{\log{\left (x^{2} + 1 \right )}}{2} + \frac{\operatorname{atan}^{2}{\left (x \right )}}{2} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.07895, size = 39, normalized size = 1.11 \begin{align*} \frac{1}{2} \, x^{2} \arctan \left (x\right )^{2} - x \arctan \left (x\right ) + \frac{1}{2} \, \arctan \left (x\right )^{2} + \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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