Optimal. Leaf size=178 \[ -\frac{8 \text{PolyLog}\left (2,1-\frac{2}{1-a x}\right )}{105 a^3}+\frac{a^2 x^5}{105}+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2-\frac{x}{210 a^2}+\frac{8 \tanh ^{-1}(a x)^2}{105 a^3}+\frac{\tanh ^{-1}(a x)}{210 a^3}-\frac{16 \log \left (\frac{2}{1-a x}\right ) \tanh ^{-1}(a x)}{105 a^3}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2+\frac{8 x^2 \tanh ^{-1}(a x)}{105 a}-\frac{17 x^3}{630} \]
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Rubi [A] time = 0.779231, antiderivative size = 178, normalized size of antiderivative = 1., number of steps used = 44, number of rules used = 10, integrand size = 22, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.454, Rules used = {6012, 5916, 5980, 321, 206, 5984, 5918, 2402, 2315, 302} \[ -\frac{8 \text{PolyLog}\left (2,1-\frac{2}{1-a x}\right )}{105 a^3}+\frac{a^2 x^5}{105}+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2-\frac{x}{210 a^2}+\frac{8 \tanh ^{-1}(a x)^2}{105 a^3}+\frac{\tanh ^{-1}(a x)}{210 a^3}-\frac{16 \log \left (\frac{2}{1-a x}\right ) \tanh ^{-1}(a x)}{105 a^3}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2+\frac{8 x^2 \tanh ^{-1}(a x)}{105 a}-\frac{17 x^3}{630} \]
Antiderivative was successfully verified.
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Rule 6012
Rule 5916
Rule 5980
Rule 321
Rule 206
Rule 5984
Rule 5918
Rule 2402
Rule 2315
Rule 302
Rubi steps
\begin{align*} \int x^2 \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2 \, dx &=\int \left (x^2 \tanh ^{-1}(a x)^2-2 a^2 x^4 \tanh ^{-1}(a x)^2+a^4 x^6 \tanh ^{-1}(a x)^2\right ) \, dx\\ &=-\left (\left (2 a^2\right ) \int x^4 \tanh ^{-1}(a x)^2 \, dx\right )+a^4 \int x^6 \tanh ^{-1}(a x)^2 \, dx+\int x^2 \tanh ^{-1}(a x)^2 \, dx\\ &=\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2-\frac{1}{3} (2 a) \int \frac{x^3 \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx+\frac{1}{5} \left (4 a^3\right ) \int \frac{x^5 \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx-\frac{1}{7} \left (2 a^5\right ) \int \frac{x^7 \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx\\ &=\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2+\frac{2 \int x \tanh ^{-1}(a x) \, dx}{3 a}-\frac{2 \int \frac{x \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx}{3 a}-\frac{1}{5} (4 a) \int x^3 \tanh ^{-1}(a x) \, dx+\frac{1}{5} (4 a) \int \frac{x^3 \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx+\frac{1}{7} \left (2 a^3\right ) \int x^5 \tanh ^{-1}(a x) \, dx-\frac{1}{7} \left (2 a^3\right ) \int \frac{x^5 \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx\\ &=\frac{x^2 \tanh ^{-1}(a x)}{3 a}-\frac{1}{5} a x^4 \tanh ^{-1}(a x)+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)+\frac{\tanh ^{-1}(a x)^2}{3 a^3}+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2-\frac{1}{3} \int \frac{x^2}{1-a^2 x^2} \, dx-\frac{2 \int \frac{\tanh ^{-1}(a x)}{1-a x} \, dx}{3 a^2}-\frac{4 \int x \tanh ^{-1}(a x) \, dx}{5 a}+\frac{4 \int \frac{x \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx}{5 a}+\frac{1}{7} (2 a) \int x^3 \tanh ^{-1}(a x) \, dx-\frac{1}{7} (2 a) \int \frac{x^3 \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx+\frac{1}{5} a^2 \int \frac{x^4}{1-a^2 x^2} \, dx-\frac{1}{21} a^4 \int \frac{x^6}{1-a^2 x^2} \, dx\\ &=\frac{x}{3 a^2}-\frac{x^2 \tanh ^{-1}(a x)}{15 a}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)-\frac{\tanh ^{-1}(a x)^2}{15 a^3}+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2-\frac{2 \tanh ^{-1}(a x) \log \left (\frac{2}{1-a x}\right )}{3 a^3}+\frac{2}{5} \int \frac{x^2}{1-a^2 x^2} \, dx-\frac{\int \frac{1}{1-a^2 x^2} \, dx}{3 a^2}+\frac{2 \int \frac{\log \left (\frac{2}{1-a x}\right )}{1-a^2 x^2} \, dx}{3 a^2}+\frac{4 \int \frac{\tanh ^{-1}(a x)}{1-a x} \, dx}{5 a^2}+\frac{2 \int x \tanh ^{-1}(a x) \, dx}{7 a}-\frac{2 \int \frac{x \tanh ^{-1}(a x)}{1-a^2 x^2} \, dx}{7 a}-\frac{1}{14} a^2 \int \frac{x^4}{1-a^2 x^2} \, dx+\frac{1}{5} a^2 \int \left (-\frac{1}{a^4}-\frac{x^2}{a^2}+\frac{1}{a^4 \left (1-a^2 x^2\right )}\right ) \, dx-\frac{1}{21} a^4 \int \left (-\frac{1}{a^6}-\frac{x^2}{a^4}-\frac{x^4}{a^2}+\frac{1}{a^6 \left (1-a^2 x^2\right )}\right ) \, dx\\ &=-\frac{23 x}{105 a^2}-\frac{16 x^3}{315}+\frac{a^2 x^5}{105}-\frac{\tanh ^{-1}(a x)}{3 a^3}+\frac{8 x^2 \tanh ^{-1}(a x)}{105 a}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)+\frac{8 \tanh ^{-1}(a x)^2}{105 a^3}+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2+\frac{2 \tanh ^{-1}(a x) \log \left (\frac{2}{1-a x}\right )}{15 a^3}-\frac{1}{7} \int \frac{x^2}{1-a^2 x^2} \, dx-\frac{2 \operatorname{Subst}\left (\int \frac{\log (2 x)}{1-2 x} \, dx,x,\frac{1}{1-a x}\right )}{3 a^3}-\frac{\int \frac{1}{1-a^2 x^2} \, dx}{21 a^2}+\frac{\int \frac{1}{1-a^2 x^2} \, dx}{5 a^2}-\frac{2 \int \frac{\tanh ^{-1}(a x)}{1-a x} \, dx}{7 a^2}+\frac{2 \int \frac{1}{1-a^2 x^2} \, dx}{5 a^2}-\frac{4 \int \frac{\log \left (\frac{2}{1-a x}\right )}{1-a^2 x^2} \, dx}{5 a^2}-\frac{1}{14} a^2 \int \left (-\frac{1}{a^4}-\frac{x^2}{a^2}+\frac{1}{a^4 \left (1-a^2 x^2\right )}\right ) \, dx\\ &=-\frac{x}{210 a^2}-\frac{17 x^3}{630}+\frac{a^2 x^5}{105}+\frac{23 \tanh ^{-1}(a x)}{105 a^3}+\frac{8 x^2 \tanh ^{-1}(a x)}{105 a}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)+\frac{8 \tanh ^{-1}(a x)^2}{105 a^3}+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2-\frac{16 \tanh ^{-1}(a x) \log \left (\frac{2}{1-a x}\right )}{105 a^3}-\frac{\text{Li}_2\left (1-\frac{2}{1-a x}\right )}{3 a^3}+\frac{4 \operatorname{Subst}\left (\int \frac{\log (2 x)}{1-2 x} \, dx,x,\frac{1}{1-a x}\right )}{5 a^3}-\frac{\int \frac{1}{1-a^2 x^2} \, dx}{14 a^2}-\frac{\int \frac{1}{1-a^2 x^2} \, dx}{7 a^2}+\frac{2 \int \frac{\log \left (\frac{2}{1-a x}\right )}{1-a^2 x^2} \, dx}{7 a^2}\\ &=-\frac{x}{210 a^2}-\frac{17 x^3}{630}+\frac{a^2 x^5}{105}+\frac{\tanh ^{-1}(a x)}{210 a^3}+\frac{8 x^2 \tanh ^{-1}(a x)}{105 a}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)+\frac{8 \tanh ^{-1}(a x)^2}{105 a^3}+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2-\frac{16 \tanh ^{-1}(a x) \log \left (\frac{2}{1-a x}\right )}{105 a^3}+\frac{\text{Li}_2\left (1-\frac{2}{1-a x}\right )}{15 a^3}-\frac{2 \operatorname{Subst}\left (\int \frac{\log (2 x)}{1-2 x} \, dx,x,\frac{1}{1-a x}\right )}{7 a^3}\\ &=-\frac{x}{210 a^2}-\frac{17 x^3}{630}+\frac{a^2 x^5}{105}+\frac{\tanh ^{-1}(a x)}{210 a^3}+\frac{8 x^2 \tanh ^{-1}(a x)}{105 a}-\frac{9}{70} a x^4 \tanh ^{-1}(a x)+\frac{1}{21} a^3 x^6 \tanh ^{-1}(a x)+\frac{8 \tanh ^{-1}(a x)^2}{105 a^3}+\frac{1}{3} x^3 \tanh ^{-1}(a x)^2-\frac{2}{5} a^2 x^5 \tanh ^{-1}(a x)^2+\frac{1}{7} a^4 x^7 \tanh ^{-1}(a x)^2-\frac{16 \tanh ^{-1}(a x) \log \left (\frac{2}{1-a x}\right )}{105 a^3}-\frac{8 \text{Li}_2\left (1-\frac{2}{1-a x}\right )}{105 a^3}\\ \end{align*}
Mathematica [A] time = 1.09864, size = 121, normalized size = 0.68 \[ \frac{48 \text{PolyLog}\left (2,-e^{-2 \tanh ^{-1}(a x)}\right )+a x \left (6 a^4 x^4-17 a^2 x^2-3\right )+6 \left (15 a^7 x^7-42 a^5 x^5+35 a^3 x^3-8\right ) \tanh ^{-1}(a x)^2+\tanh ^{-1}(a x) \left (30 a^6 x^6-81 a^4 x^4+48 a^2 x^2-96 \log \left (e^{-2 \tanh ^{-1}(a x)}+1\right )+3\right )}{630 a^3} \]
Warning: Unable to verify antiderivative.
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Maple [A] time = 0.05, size = 239, normalized size = 1.3 \begin{align*}{\frac{{a}^{4}{x}^{7} \left ({\it Artanh} \left ( ax \right ) \right ) ^{2}}{7}}-{\frac{2\,{a}^{2}{x}^{5} \left ({\it Artanh} \left ( ax \right ) \right ) ^{2}}{5}}+{\frac{{x}^{3} \left ({\it Artanh} \left ( ax \right ) \right ) ^{2}}{3}}+{\frac{{a}^{3}{x}^{6}{\it Artanh} \left ( ax \right ) }{21}}-{\frac{9\,a{x}^{4}{\it Artanh} \left ( ax \right ) }{70}}+{\frac{8\,{x}^{2}{\it Artanh} \left ( ax \right ) }{105\,a}}+{\frac{8\,{\it Artanh} \left ( ax \right ) \ln \left ( ax-1 \right ) }{105\,{a}^{3}}}+{\frac{8\,{\it Artanh} \left ( ax \right ) \ln \left ( ax+1 \right ) }{105\,{a}^{3}}}+{\frac{{x}^{5}{a}^{2}}{105}}-{\frac{17\,{x}^{3}}{630}}-{\frac{x}{210\,{a}^{2}}}-{\frac{\ln \left ( ax-1 \right ) }{420\,{a}^{3}}}+{\frac{\ln \left ( ax+1 \right ) }{420\,{a}^{3}}}+{\frac{2\, \left ( \ln \left ( ax-1 \right ) \right ) ^{2}}{105\,{a}^{3}}}-{\frac{8}{105\,{a}^{3}}{\it dilog} \left ({\frac{1}{2}}+{\frac{ax}{2}} \right ) }-{\frac{4\,\ln \left ( ax-1 \right ) }{105\,{a}^{3}}\ln \left ({\frac{1}{2}}+{\frac{ax}{2}} \right ) }-{\frac{4}{105\,{a}^{3}}\ln \left ( -{\frac{ax}{2}}+{\frac{1}{2}} \right ) \ln \left ({\frac{1}{2}}+{\frac{ax}{2}} \right ) }+{\frac{4\,\ln \left ( ax+1 \right ) }{105\,{a}^{3}}\ln \left ( -{\frac{ax}{2}}+{\frac{1}{2}} \right ) }-{\frac{2\, \left ( \ln \left ( ax+1 \right ) \right ) ^{2}}{105\,{a}^{3}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 0.983677, size = 267, normalized size = 1.5 \begin{align*} \frac{1}{1260} \, a^{2}{\left (\frac{12 \, a^{5} x^{5} - 34 \, a^{3} x^{3} - 6 \, a x - 24 \, \log \left (a x + 1\right )^{2} + 48 \, \log \left (a x + 1\right ) \log \left (a x - 1\right ) + 24 \, \log \left (a x - 1\right )^{2} - 3 \, \log \left (a x - 1\right )}{a^{5}} - \frac{96 \,{\left (\log \left (a x - 1\right ) \log \left (\frac{1}{2} \, a x + \frac{1}{2}\right ) +{\rm Li}_2\left (-\frac{1}{2} \, a x + \frac{1}{2}\right )\right )}}{a^{5}} + \frac{3 \, \log \left (a x + 1\right )}{a^{5}}\right )} + \frac{1}{210} \, a{\left (\frac{10 \, a^{4} x^{6} - 27 \, a^{2} x^{4} + 16 \, x^{2}}{a^{2}} + \frac{16 \, \log \left (a x + 1\right )}{a^{4}} + \frac{16 \, \log \left (a x - 1\right )}{a^{4}}\right )} \operatorname{artanh}\left (a x\right ) + \frac{1}{105} \,{\left (15 \, a^{4} x^{7} - 42 \, a^{2} x^{5} + 35 \, x^{3}\right )} \operatorname{artanh}\left (a x\right )^{2} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left ({\left (a^{4} x^{6} - 2 \, a^{2} x^{4} + x^{2}\right )} \operatorname{artanh}\left (a x\right )^{2}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2} \left (a x - 1\right )^{2} \left (a x + 1\right )^{2} \operatorname{atanh}^{2}{\left (a x \right )}\, dx \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{\left (a^{2} x^{2} - 1\right )}^{2} x^{2} \operatorname{artanh}\left (a x\right )^{2}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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