Optimal. Leaf size=186 \[ \frac {2 i \text {Li}_2\left (-\frac {i \sqrt {1-a x}}{\sqrt {a x+1}}\right )}{a^4}-\frac {2 i \text {Li}_2\left (\frac {i \sqrt {1-a x}}{\sqrt {a x+1}}\right )}{a^4}+\frac {4 \tan ^{-1}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right ) \tanh ^{-1}(a x)}{a^4}+\frac {2}{a^4 \sqrt {1-a^2 x^2}}+\frac {\sqrt {1-a^2 x^2} \tanh ^{-1}(a x)^2}{a^4}+\frac {\tanh ^{-1}(a x)^2}{a^4 \sqrt {1-a^2 x^2}}-\frac {2 x \tanh ^{-1}(a x)}{a^3 \sqrt {1-a^2 x^2}} \]
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Rubi [A] time = 0.31, antiderivative size = 186, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, integrand size = 24, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {6028, 5994, 5950, 5958} \[ \frac {2 i \text {PolyLog}\left (2,-\frac {i \sqrt {1-a x}}{\sqrt {a x+1}}\right )}{a^4}-\frac {2 i \text {PolyLog}\left (2,\frac {i \sqrt {1-a x}}{\sqrt {a x+1}}\right )}{a^4}+\frac {2}{a^4 \sqrt {1-a^2 x^2}}+\frac {\sqrt {1-a^2 x^2} \tanh ^{-1}(a x)^2}{a^4}+\frac {\tanh ^{-1}(a x)^2}{a^4 \sqrt {1-a^2 x^2}}-\frac {2 x \tanh ^{-1}(a x)}{a^3 \sqrt {1-a^2 x^2}}+\frac {4 \tan ^{-1}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right ) \tanh ^{-1}(a x)}{a^4} \]
Antiderivative was successfully verified.
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Rule 5950
Rule 5958
Rule 5994
Rule 6028
Rubi steps
\begin {align*} \int \frac {x^3 \tanh ^{-1}(a x)^2}{\left (1-a^2 x^2\right )^{3/2}} \, dx &=\frac {\int \frac {x \tanh ^{-1}(a x)^2}{\left (1-a^2 x^2\right )^{3/2}} \, dx}{a^2}-\frac {\int \frac {x \tanh ^{-1}(a x)^2}{\sqrt {1-a^2 x^2}} \, dx}{a^2}\\ &=\frac {\tanh ^{-1}(a x)^2}{a^4 \sqrt {1-a^2 x^2}}+\frac {\sqrt {1-a^2 x^2} \tanh ^{-1}(a x)^2}{a^4}-\frac {2 \int \frac {\tanh ^{-1}(a x)}{\left (1-a^2 x^2\right )^{3/2}} \, dx}{a^3}-\frac {2 \int \frac {\tanh ^{-1}(a x)}{\sqrt {1-a^2 x^2}} \, dx}{a^3}\\ &=\frac {2}{a^4 \sqrt {1-a^2 x^2}}-\frac {2 x \tanh ^{-1}(a x)}{a^3 \sqrt {1-a^2 x^2}}+\frac {4 \tan ^{-1}\left (\frac {\sqrt {1-a x}}{\sqrt {1+a x}}\right ) \tanh ^{-1}(a x)}{a^4}+\frac {\tanh ^{-1}(a x)^2}{a^4 \sqrt {1-a^2 x^2}}+\frac {\sqrt {1-a^2 x^2} \tanh ^{-1}(a x)^2}{a^4}+\frac {2 i \text {Li}_2\left (-\frac {i \sqrt {1-a x}}{\sqrt {1+a x}}\right )}{a^4}-\frac {2 i \text {Li}_2\left (\frac {i \sqrt {1-a x}}{\sqrt {1+a x}}\right )}{a^4}\\ \end {align*}
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Mathematica [A] time = 0.40, size = 165, normalized size = 0.89 \[ \frac {\frac {-2 i \sqrt {1-a^2 x^2} \text {Li}_2\left (i e^{-\tanh ^{-1}(a x)}\right )+\left (2-a^2 x^2\right ) \tanh ^{-1}(a x)^2-2 \tanh ^{-1}(a x) \left (-i \sqrt {1-a^2 x^2} \log \left (1-i e^{-\tanh ^{-1}(a x)}\right )+i \sqrt {1-a^2 x^2} \log \left (1+i e^{-\tanh ^{-1}(a x)}\right )+a x\right )+2}{\sqrt {1-a^2 x^2}}+2 i \text {Li}_2\left (-i e^{-\tanh ^{-1}(a x)}\right )}{a^4} \]
Warning: Unable to verify antiderivative.
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fricas [F] time = 0.58, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {\sqrt {-a^{2} x^{2} + 1} x^{3} \operatorname {artanh}\left (a x\right )^{2}}{a^{4} x^{4} - 2 \, a^{2} x^{2} + 1}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: TypeError} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.43, size = 230, normalized size = 1.24 \[ -\frac {\left (\arctanh \left (a x \right )^{2}-2 \arctanh \left (a x \right )+2\right ) \sqrt {-\left (a x -1\right ) \left (a x +1\right )}}{2 a^{4} \left (a x -1\right )}+\frac {\left (\arctanh \left (a x \right )^{2}+2 \arctanh \left (a x \right )+2\right ) \sqrt {-\left (a x -1\right ) \left (a x +1\right )}}{2 a^{4} \left (a x +1\right )}+\frac {\arctanh \left (a x \right )^{2} \sqrt {-\left (a x -1\right ) \left (a x +1\right )}}{a^{4}}+\frac {2 i \ln \left (1+\frac {i \left (a x +1\right )}{\sqrt {-a^{2} x^{2}+1}}\right ) \arctanh \left (a x \right )}{a^{4}}-\frac {2 i \ln \left (1-\frac {i \left (a x +1\right )}{\sqrt {-a^{2} x^{2}+1}}\right ) \arctanh \left (a x \right )}{a^{4}}+\frac {2 i \dilog \left (1+\frac {i \left (a x +1\right )}{\sqrt {-a^{2} x^{2}+1}}\right )}{a^{4}}-\frac {2 i \dilog \left (1-\frac {i \left (a x +1\right )}{\sqrt {-a^{2} x^{2}+1}}\right )}{a^{4}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{3} \operatorname {artanh}\left (a x\right )^{2}}{{\left (-a^{2} x^{2} + 1\right )}^{\frac {3}{2}}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {x^3\,{\mathrm {atanh}\left (a\,x\right )}^2}{{\left (1-a^2\,x^2\right )}^{3/2}} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {x^{3} \operatorname {atanh}^{2}{\left (a x \right )}}{\left (- \left (a x - 1\right ) \left (a x + 1\right )\right )^{\frac {3}{2}}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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