Optimal. Leaf size=105 \[ \frac{x \sqrt{1-\frac{1}{a x}}}{c \sqrt{\frac{1}{a x}+1}}+\frac{2 \sqrt{1-\frac{1}{a x}}}{a c \sqrt{\frac{1}{a x}+1}}-\frac{\tanh ^{-1}\left (\sqrt{1-\frac{1}{a x}} \sqrt{\frac{1}{a x}+1}\right )}{a c} \]
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Rubi [A] time = 0.0773693, antiderivative size = 105, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 22, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.273, Rules used = {6194, 103, 21, 94, 92, 208} \[ \frac{x \sqrt{1-\frac{1}{a x}}}{c \sqrt{\frac{1}{a x}+1}}+\frac{2 \sqrt{1-\frac{1}{a x}}}{a c \sqrt{\frac{1}{a x}+1}}-\frac{\tanh ^{-1}\left (\sqrt{1-\frac{1}{a x}} \sqrt{\frac{1}{a x}+1}\right )}{a c} \]
Antiderivative was successfully verified.
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Rule 6194
Rule 103
Rule 21
Rule 94
Rule 92
Rule 208
Rubi steps
\begin{align*} \int \frac{e^{-\coth ^{-1}(a x)}}{c-\frac{c}{a^2 x^2}} \, dx &=-\frac{\operatorname{Subst}\left (\int \frac{1}{x^2 \sqrt{1-\frac{x}{a}} \left (1+\frac{x}{a}\right )^{3/2}} \, dx,x,\frac{1}{x}\right )}{c}\\ &=\frac{\sqrt{1-\frac{1}{a x}} x}{c \sqrt{1+\frac{1}{a x}}}+\frac{\operatorname{Subst}\left (\int \frac{\frac{1}{a}-\frac{x}{a^2}}{x \sqrt{1-\frac{x}{a}} \left (1+\frac{x}{a}\right )^{3/2}} \, dx,x,\frac{1}{x}\right )}{c}\\ &=\frac{\sqrt{1-\frac{1}{a x}} x}{c \sqrt{1+\frac{1}{a x}}}+\frac{\operatorname{Subst}\left (\int \frac{\sqrt{1-\frac{x}{a}}}{x \left (1+\frac{x}{a}\right )^{3/2}} \, dx,x,\frac{1}{x}\right )}{a c}\\ &=\frac{2 \sqrt{1-\frac{1}{a x}}}{a c \sqrt{1+\frac{1}{a x}}}+\frac{\sqrt{1-\frac{1}{a x}} x}{c \sqrt{1+\frac{1}{a x}}}+\frac{\operatorname{Subst}\left (\int \frac{1}{x \sqrt{1-\frac{x}{a}} \sqrt{1+\frac{x}{a}}} \, dx,x,\frac{1}{x}\right )}{a c}\\ &=\frac{2 \sqrt{1-\frac{1}{a x}}}{a c \sqrt{1+\frac{1}{a x}}}+\frac{\sqrt{1-\frac{1}{a x}} x}{c \sqrt{1+\frac{1}{a x}}}-\frac{\operatorname{Subst}\left (\int \frac{1}{\frac{1}{a}-\frac{x^2}{a}} \, dx,x,\sqrt{1-\frac{1}{a x}} \sqrt{1+\frac{1}{a x}}\right )}{a^2 c}\\ &=\frac{2 \sqrt{1-\frac{1}{a x}}}{a c \sqrt{1+\frac{1}{a x}}}+\frac{\sqrt{1-\frac{1}{a x}} x}{c \sqrt{1+\frac{1}{a x}}}-\frac{\tanh ^{-1}\left (\sqrt{1-\frac{1}{a x}} \sqrt{1+\frac{1}{a x}}\right )}{a c}\\ \end{align*}
Mathematica [A] time = 0.113981, size = 57, normalized size = 0.54 \[ \frac{\frac{x \sqrt{1-\frac{1}{a^2 x^2}} (a x+2)}{a x+1}-\frac{\log \left (x \left (\sqrt{1-\frac{1}{a^2 x^2}}+1\right )\right )}{a}}{c} \]
Warning: Unable to verify antiderivative.
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Maple [B] time = 0.157, size = 250, normalized size = 2.4 \begin{align*} -{\frac{1}{2\,a \left ( ax+1 \right ) c} \left ( 2\,\ln \left ({\frac{{a}^{2}x+\sqrt{{a}^{2}}\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) }}{\sqrt{{a}^{2}}}} \right ){x}^{2}{a}^{3}-3\,\sqrt{{a}^{2}}\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) }{x}^{2}{a}^{2}+4\,\ln \left ({\frac{{a}^{2}x+\sqrt{{a}^{2}}\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) }}{\sqrt{{a}^{2}}}} \right ) x{a}^{2}+ \left ( \left ( ax-1 \right ) \left ( ax+1 \right ) \right ) ^{{\frac{3}{2}}}\sqrt{{a}^{2}}-6\,\sqrt{{a}^{2}}\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) }xa+2\,a\ln \left ({\frac{{a}^{2}x+\sqrt{{a}^{2}}\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) }}{\sqrt{{a}^{2}}}} \right ) -3\,\sqrt{{a}^{2}}\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) } \right ) \sqrt{{\frac{ax-1}{ax+1}}}{\frac{1}{\sqrt{{a}^{2}}}}{\frac{1}{\sqrt{ \left ( ax-1 \right ) \left ( ax+1 \right ) }}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.03992, size = 163, normalized size = 1.55 \begin{align*} -a{\left (\frac{2 \, \sqrt{\frac{a x - 1}{a x + 1}}}{\frac{{\left (a x - 1\right )} a^{2} c}{a x + 1} - a^{2} c} + \frac{\log \left (\sqrt{\frac{a x - 1}{a x + 1}} + 1\right )}{a^{2} c} - \frac{\log \left (\sqrt{\frac{a x - 1}{a x + 1}} - 1\right )}{a^{2} c} - \frac{\sqrt{\frac{a x - 1}{a x + 1}}}{a^{2} c}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.46311, size = 161, normalized size = 1.53 \begin{align*} \frac{{\left (a x + 2\right )} \sqrt{\frac{a x - 1}{a x + 1}} - \log \left (\sqrt{\frac{a x - 1}{a x + 1}} + 1\right ) + \log \left (\sqrt{\frac{a x - 1}{a x + 1}} - 1\right )}{a c} \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*} \frac{a^{2} \int \frac{x^{2} \sqrt{\frac{a x}{a x + 1} - \frac{1}{a x + 1}}}{a^{2} x^{2} - 1}\, dx}{c} \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*} \mathit{undef} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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