Optimal. Leaf size=41 \[ 2 a^3 \log (x)-2 a^3 \log (1-a x)-\frac {2 a^2}{x}-\frac {a}{x^2}-\frac {1}{3 x^3} \]
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Rubi [A] time = 0.04, antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {6126, 77} \[ -\frac {2 a^2}{x}+2 a^3 \log (x)-2 a^3 \log (1-a x)-\frac {a}{x^2}-\frac {1}{3 x^3} \]
Antiderivative was successfully verified.
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Rule 77
Rule 6126
Rubi steps
\begin {align*} \int \frac {e^{2 \tanh ^{-1}(a x)}}{x^4} \, dx &=\int \frac {1+a x}{x^4 (1-a x)} \, dx\\ &=\int \left (\frac {1}{x^4}+\frac {2 a}{x^3}+\frac {2 a^2}{x^2}+\frac {2 a^3}{x}-\frac {2 a^4}{-1+a x}\right ) \, dx\\ &=-\frac {1}{3 x^3}-\frac {a}{x^2}-\frac {2 a^2}{x}+2 a^3 \log (x)-2 a^3 \log (1-a x)\\ \end {align*}
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Mathematica [A] time = 0.01, size = 41, normalized size = 1.00 \[ 2 a^3 \log (x)-2 a^3 \log (1-a x)-\frac {2 a^2}{x}-\frac {a}{x^2}-\frac {1}{3 x^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.47, size = 43, normalized size = 1.05 \[ -\frac {6 \, a^{3} x^{3} \log \left (a x - 1\right ) - 6 \, a^{3} x^{3} \log \relax (x) + 6 \, a^{2} x^{2} + 3 \, a x + 1}{3 \, x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.19, size = 40, normalized size = 0.98 \[ -2 \, a^{3} \log \left ({\left | a x - 1 \right |}\right ) + 2 \, a^{3} \log \left ({\left | x \right |}\right ) - \frac {6 \, a^{2} x^{2} + 3 \, a x + 1}{3 \, x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.03, size = 39, normalized size = 0.95 \[ -\frac {1}{3 x^{3}}-\frac {a}{x^{2}}-\frac {2 a^{2}}{x}+2 a^{3} \ln \relax (x )-2 a^{3} \ln \left (a x -1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.31, size = 38, normalized size = 0.93 \[ -2 \, a^{3} \log \left (a x - 1\right ) + 2 \, a^{3} \log \relax (x) - \frac {6 \, a^{2} x^{2} + 3 \, a x + 1}{3 \, x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.05, size = 31, normalized size = 0.76 \[ 4\,a^3\,\mathrm {atanh}\left (2\,a\,x-1\right )-\frac {2\,a^2\,x^2+a\,x+\frac {1}{3}}{x^3} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.18, size = 36, normalized size = 0.88 \[ - 2 a^{3} \left (- \log {\relax (x )} + \log {\left (x - \frac {1}{a} \right )}\right ) - \frac {6 a^{2} x^{2} + 3 a x + 1}{3 x^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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