Optimal. Leaf size=36 \[ \frac{\text{Chi}\left (\tanh ^{-1}(a x)\right )}{a^2}-\frac{x}{a \sqrt{1-a^2 x^2} \tanh ^{-1}(a x)} \]
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Rubi [A] time = 0.121882, antiderivative size = 36, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 22, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.136, Rules used = {6006, 5968, 3301} \[ \frac{\text{Chi}\left (\tanh ^{-1}(a x)\right )}{a^2}-\frac{x}{a \sqrt{1-a^2 x^2} \tanh ^{-1}(a x)} \]
Antiderivative was successfully verified.
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Rule 6006
Rule 5968
Rule 3301
Rubi steps
\begin{align*} \int \frac{x}{\left (1-a^2 x^2\right )^{3/2} \tanh ^{-1}(a x)^2} \, dx &=-\frac{x}{a \sqrt{1-a^2 x^2} \tanh ^{-1}(a x)}+\frac{\int \frac{1}{\left (1-a^2 x^2\right )^{3/2} \tanh ^{-1}(a x)} \, dx}{a}\\ &=-\frac{x}{a \sqrt{1-a^2 x^2} \tanh ^{-1}(a x)}+\frac{\operatorname{Subst}\left (\int \frac{\cosh (x)}{x} \, dx,x,\tanh ^{-1}(a x)\right )}{a^2}\\ &=-\frac{x}{a \sqrt{1-a^2 x^2} \tanh ^{-1}(a x)}+\frac{\text{Chi}\left (\tanh ^{-1}(a x)\right )}{a^2}\\ \end{align*}
Mathematica [A] time = 0.0323687, size = 34, normalized size = 0.94 \[ \frac{\text{Chi}\left (\tanh ^{-1}(a x)\right )-\frac{a x}{\sqrt{1-a^2 x^2} \tanh ^{-1}(a x)}}{a^2} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.227, size = 90, normalized size = 2.5 \begin{align*}{\frac{1}{2\,{a}^{2} \left ( ax-1 \right ){\it Artanh} \left ( ax \right ) }\sqrt{- \left ( ax-1 \right ) \left ( ax+1 \right ) }}-{\frac{{\it Ei} \left ( 1,-{\it Artanh} \left ( ax \right ) \right ) }{2\,{a}^{2}}}+{\frac{1}{2\,{a}^{2} \left ( ax+1 \right ){\it Artanh} \left ( ax \right ) }\sqrt{- \left ( ax-1 \right ) \left ( ax+1 \right ) }}-{\frac{{\it Ei} \left ( 1,{\it Artanh} \left ( ax \right ) \right ) }{2\,{a}^{2}}} \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 \frac{x}{{\left (-a^{2} x^{2} + 1\right )}^{\frac{3}{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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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\sqrt{-a^{2} x^{2} + 1} x}{{\left (a^{4} x^{4} - 2 \, a^{2} x^{2} + 1\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 \frac{x}{\left (- \left (a x - 1\right ) \left (a x + 1\right )\right )^{\frac{3}{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 \frac{x}{{\left (-a^{2} x^{2} + 1\right )}^{\frac{3}{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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