Optimal. Leaf size=133 \[ -\frac{1}{3} (1-x)^{2/3} x (x+1)^{4/3}-\frac{1}{9} (1-x)^{2/3} (x+1)^{4/3}-\frac{11}{27} (1-x)^{2/3} \sqrt [3]{x+1}+\frac{11}{81} \log (x+1)+\frac{11}{27} \log \left (\frac{\sqrt [3]{1-x}}{\sqrt [3]{x+1}}+1\right )+\frac{22 \tan ^{-1}\left (\frac{1}{\sqrt{3}}-\frac{2 \sqrt [3]{1-x}}{\sqrt{3} \sqrt [3]{x+1}}\right )}{27 \sqrt{3}} \]
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Rubi [A] time = 0.049726, antiderivative size = 133, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.417, Rules used = {6126, 90, 80, 50, 60} \[ -\frac{1}{3} (1-x)^{2/3} x (x+1)^{4/3}-\frac{1}{9} (1-x)^{2/3} (x+1)^{4/3}-\frac{11}{27} (1-x)^{2/3} \sqrt [3]{x+1}+\frac{11}{81} \log (x+1)+\frac{11}{27} \log \left (\frac{\sqrt [3]{1-x}}{\sqrt [3]{x+1}}+1\right )+\frac{22 \tan ^{-1}\left (\frac{1}{\sqrt{3}}-\frac{2 \sqrt [3]{1-x}}{\sqrt{3} \sqrt [3]{x+1}}\right )}{27 \sqrt{3}} \]
Antiderivative was successfully verified.
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Rule 6126
Rule 90
Rule 80
Rule 50
Rule 60
Rubi steps
\begin{align*} \int e^{\frac{2}{3} \tanh ^{-1}(x)} x^2 \, dx &=\int \frac{x^2 \sqrt [3]{1+x}}{\sqrt [3]{1-x}} \, dx\\ &=-\frac{1}{3} (1-x)^{2/3} x (1+x)^{4/3}-\frac{1}{3} \int \frac{\left (-1-\frac{2 x}{3}\right ) \sqrt [3]{1+x}}{\sqrt [3]{1-x}} \, dx\\ &=-\frac{1}{9} (1-x)^{2/3} (1+x)^{4/3}-\frac{1}{3} (1-x)^{2/3} x (1+x)^{4/3}+\frac{11}{27} \int \frac{\sqrt [3]{1+x}}{\sqrt [3]{1-x}} \, dx\\ &=-\frac{11}{27} (1-x)^{2/3} \sqrt [3]{1+x}-\frac{1}{9} (1-x)^{2/3} (1+x)^{4/3}-\frac{1}{3} (1-x)^{2/3} x (1+x)^{4/3}+\frac{22}{81} \int \frac{1}{\sqrt [3]{1-x} (1+x)^{2/3}} \, dx\\ &=-\frac{11}{27} (1-x)^{2/3} \sqrt [3]{1+x}-\frac{1}{9} (1-x)^{2/3} (1+x)^{4/3}-\frac{1}{3} (1-x)^{2/3} x (1+x)^{4/3}+\frac{22 \tan ^{-1}\left (\frac{1}{\sqrt{3}}-\frac{2 \sqrt [3]{1-x}}{\sqrt{3} \sqrt [3]{1+x}}\right )}{27 \sqrt{3}}+\frac{11}{81} \log (1+x)+\frac{11}{27} \log \left (1+\frac{\sqrt [3]{1-x}}{\sqrt [3]{1+x}}\right )\\ \end{align*}
Mathematica [C] time = 0.026558, size = 59, normalized size = 0.44 \[ -\frac{1}{18} (1-x)^{2/3} \left (11 \sqrt [3]{2} \text{Hypergeometric2F1}\left (-\frac{1}{3},\frac{2}{3},\frac{5}{3},\frac{1-x}{2}\right )+2 \sqrt [3]{x+1} \left (3 x^2+4 x+1\right )\right ) \]
Warning: Unable to verify antiderivative.
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Maple [F] time = 0.034, size = 0, normalized size = 0. \begin{align*} \int \left ({(1+x){\frac{1}{\sqrt{-{x}^{2}+1}}}} \right ) ^{{\frac{2}{3}}}{x}^{2}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2} \left (\frac{x + 1}{\sqrt{-x^{2} + 1}}\right )^{\frac{2}{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.68016, size = 428, normalized size = 3.22 \begin{align*} \frac{1}{27} \,{\left (9 \, x^{3} + 3 \, x^{2} + 2 \, x - 14\right )} \left (-\frac{\sqrt{-x^{2} + 1}}{x - 1}\right )^{\frac{2}{3}} + \frac{22}{81} \, \sqrt{3} \arctan \left (\frac{2}{3} \, \sqrt{3} \left (-\frac{\sqrt{-x^{2} + 1}}{x - 1}\right )^{\frac{2}{3}} - \frac{1}{3} \, \sqrt{3}\right ) + \frac{22}{81} \, \log \left (\left (-\frac{\sqrt{-x^{2} + 1}}{x - 1}\right )^{\frac{2}{3}} + 1\right ) - \frac{11}{81} \, \log \left (-\frac{{\left (x - 1\right )} \left (-\frac{\sqrt{-x^{2} + 1}}{x - 1}\right )^{\frac{2}{3}} - x + \sqrt{-x^{2} + 1} \left (-\frac{\sqrt{-x^{2} + 1}}{x - 1}\right )^{\frac{1}{3}} + 1}{x - 1}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2} \left (\frac{x + 1}{\sqrt{-x^{2} + 1}}\right )^{\frac{2}{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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