Optimal. Leaf size=69 \[ -\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}+\frac{\text{Chi}\left (2 \tanh ^{-1}(a x)\right )}{a}+\frac{\text{Chi}\left (4 \tanh ^{-1}(a x)\right )}{a} \]
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Rubi [A] time = 0.27001, antiderivative size = 69, normalized size of antiderivative = 1., number of steps used = 11, number of rules used = 7, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.368, Rules used = {5966, 6032, 6034, 5448, 3301, 5968, 3312} \[ -\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}+\frac{\text{Chi}\left (2 \tanh ^{-1}(a x)\right )}{a}+\frac{\text{Chi}\left (4 \tanh ^{-1}(a x)\right )}{a} \]
Antiderivative was successfully verified.
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Rule 5966
Rule 6032
Rule 6034
Rule 5448
Rule 3301
Rule 5968
Rule 3312
Rubi steps
\begin{align*} \int \frac{1}{\left (1-a^2 x^2\right )^3 \tanh ^{-1}(a x)^3} \, dx &=-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}+(2 a) \int \frac{x}{\left (1-a^2 x^2\right )^3 \tanh ^{-1}(a x)^2} \, dx\\ &=-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}-\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}+2 \int \frac{1}{\left (1-a^2 x^2\right )^3 \tanh ^{-1}(a x)} \, dx+\left (6 a^2\right ) \int \frac{x^2}{\left (1-a^2 x^2\right )^3 \tanh ^{-1}(a x)} \, dx\\ &=-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}-\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}+\frac{2 \operatorname{Subst}\left (\int \frac{\cosh ^4(x)}{x} \, dx,x,\tanh ^{-1}(a x)\right )}{a}+\frac{6 \operatorname{Subst}\left (\int \frac{\cosh ^2(x) \sinh ^2(x)}{x} \, dx,x,\tanh ^{-1}(a x)\right )}{a}\\ &=-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}-\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}+\frac{2 \operatorname{Subst}\left (\int \left (\frac{3}{8 x}+\frac{\cosh (2 x)}{2 x}+\frac{\cosh (4 x)}{8 x}\right ) \, dx,x,\tanh ^{-1}(a x)\right )}{a}+\frac{6 \operatorname{Subst}\left (\int \left (-\frac{1}{8 x}+\frac{\cosh (4 x)}{8 x}\right ) \, dx,x,\tanh ^{-1}(a x)\right )}{a}\\ &=-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}-\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}+\frac{\operatorname{Subst}\left (\int \frac{\cosh (4 x)}{x} \, dx,x,\tanh ^{-1}(a x)\right )}{4 a}+\frac{3 \operatorname{Subst}\left (\int \frac{\cosh (4 x)}{x} \, dx,x,\tanh ^{-1}(a x)\right )}{4 a}+\frac{\operatorname{Subst}\left (\int \frac{\cosh (2 x)}{x} \, dx,x,\tanh ^{-1}(a x)\right )}{a}\\ &=-\frac{1}{2 a \left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)^2}-\frac{2 x}{\left (1-a^2 x^2\right )^2 \tanh ^{-1}(a x)}+\frac{\text{Chi}\left (2 \tanh ^{-1}(a x)\right )}{a}+\frac{\text{Chi}\left (4 \tanh ^{-1}(a x)\right )}{a}\\ \end{align*}
Mathematica [A] time = 0.177831, size = 86, normalized size = 1.25 \[ \frac{2 \left (a^2 x^2-1\right )^2 \tanh ^{-1}(a x)^2 \text{Chi}\left (2 \tanh ^{-1}(a x)\right )+2 \left (a^2 x^2-1\right )^2 \tanh ^{-1}(a x)^2 \text{Chi}\left (4 \tanh ^{-1}(a x)\right )-4 a x \tanh ^{-1}(a x)-1}{2 a \left (a^2 x^2-1\right )^2 \tanh ^{-1}(a x)^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.064, size = 88, normalized size = 1.3 \begin{align*}{\frac{1}{a} \left ( -{\frac{3}{16\, \left ({\it Artanh} \left ( ax \right ) \right ) ^{2}}}-{\frac{\cosh \left ( 2\,{\it Artanh} \left ( ax \right ) \right ) }{4\, \left ({\it Artanh} \left ( ax \right ) \right ) ^{2}}}-{\frac{\sinh \left ( 2\,{\it Artanh} \left ( ax \right ) \right ) }{2\,{\it Artanh} \left ( ax \right ) }}+{\it Chi} \left ( 2\,{\it Artanh} \left ( ax \right ) \right ) -{\frac{\cosh \left ( 4\,{\it Artanh} \left ( ax \right ) \right ) }{16\, \left ({\it Artanh} \left ( ax \right ) \right ) ^{2}}}-{\frac{\sinh \left ( 4\,{\it Artanh} \left ( ax \right ) \right ) }{4\,{\it Artanh} \left ( ax \right ) }}+{\it Chi} \left ( 4\,{\it Artanh} \left ( ax \right ) \right ) \right ) } \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*} -\frac{2 \,{\left (2 \, a x \log \left (a x + 1\right ) - 2 \, a x \log \left (-a x + 1\right ) + 1\right )}}{{\left (a^{5} x^{4} - 2 \, a^{3} x^{2} + a\right )} \log \left (a x + 1\right )^{2} - 2 \,{\left (a^{5} x^{4} - 2 \, a^{3} x^{2} + a\right )} \log \left (a x + 1\right ) \log \left (-a x + 1\right ) +{\left (a^{5} x^{4} - 2 \, a^{3} x^{2} + a\right )} \log \left (-a x + 1\right )^{2}} + \int -\frac{4 \,{\left (3 \, a^{2} x^{2} + 1\right )}}{{\left (a^{6} x^{6} - 3 \, a^{4} x^{4} + 3 \, a^{2} x^{2} - 1\right )} \log \left (a x + 1\right ) -{\left (a^{6} x^{6} - 3 \, a^{4} x^{4} + 3 \, a^{2} x^{2} - 1\right )} \log \left (-a x + 1\right )}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 2.01353, size = 578, normalized size = 8.38 \begin{align*} -\frac{8 \, a x \log \left (-\frac{a x + 1}{a x - 1}\right ) -{\left ({\left (a^{4} x^{4} - 2 \, a^{2} x^{2} + 1\right )} \logintegral \left (\frac{a^{2} x^{2} + 2 \, a x + 1}{a^{2} x^{2} - 2 \, a x + 1}\right ) +{\left (a^{4} x^{4} - 2 \, a^{2} x^{2} + 1\right )} \logintegral \left (\frac{a^{2} x^{2} - 2 \, a x + 1}{a^{2} x^{2} + 2 \, a x + 1}\right ) +{\left (a^{4} x^{4} - 2 \, a^{2} x^{2} + 1\right )} \logintegral \left (-\frac{a x + 1}{a x - 1}\right ) +{\left (a^{4} x^{4} - 2 \, a^{2} x^{2} + 1\right )} \logintegral \left (-\frac{a x - 1}{a x + 1}\right )\right )} \log \left (-\frac{a x + 1}{a x - 1}\right )^{2} + 4}{2 \,{\left (a^{5} x^{4} - 2 \, a^{3} x^{2} + a\right )} \log \left (-\frac{a x + 1}{a x - 1}\right )^{2}} \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 \frac{1}{a^{6} x^{6} \operatorname{atanh}^{3}{\left (a x \right )} - 3 a^{4} x^{4} \operatorname{atanh}^{3}{\left (a x \right )} + 3 a^{2} x^{2} \operatorname{atanh}^{3}{\left (a x \right )} - \operatorname{atanh}^{3}{\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 -\frac{1}{{\left (a^{2} x^{2} - 1\right )}^{3} \operatorname{artanh}\left (a x\right )^{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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