Optimal. Leaf size=20 \[ \text{PolyLog}(2,1-e x)+\log (e x) \log (e x-1) \]
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Rubi [A] time = 0.0185377, antiderivative size = 20, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 10, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.2, Rules used = {2394, 2315} \[ \text{PolyLog}(2,1-e x)+\log (e x) \log (e x-1) \]
Antiderivative was successfully verified.
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Rule 2394
Rule 2315
Rubi steps
\begin{align*} \int \frac{\log (-1+e x)}{x} \, dx &=\log (e x) \log (-1+e x)-e \int \frac{\log (e x)}{-1+e x} \, dx\\ &=\log (e x) \log (-1+e x)+\text{Li}_2(1-e x)\\ \end{align*}
Mathematica [A] time = 0.0017607, size = 20, normalized size = 1. \[ \text{PolyLog}(2,1-e x)+\log (e x) \log (e x-1) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.059, size = 17, normalized size = 0.9 \begin{align*}{\it dilog} \left ( ex \right ) +\ln \left ( ex \right ) \ln \left ( ex-1 \right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.23756, size = 26, normalized size = 1.3 \begin{align*} \log \left (e x - 1\right ) \log \left (e x\right ) +{\rm Li}_2\left (-e x + 1\right ) \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{\log \left (e x - 1\right )}{x}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 3.72385, size = 48, normalized size = 2.4 \begin{align*} \begin{cases} i \pi \log{\left (x \right )} - \operatorname{Li}_{2}\left (e x\right ) & \text{for}\: \left |{x}\right | < 1 \\- i \pi \log{\left (\frac{1}{x} \right )} - \operatorname{Li}_{2}\left (e x\right ) & \text{for}\: \frac{1}{\left |{x}\right |} < 1 \\- i \pi{G_{2, 2}^{2, 0}\left (\begin{matrix} & 1, 1 \\0, 0 & \end{matrix} \middle |{x} \right )} + i \pi{G_{2, 2}^{0, 2}\left (\begin{matrix} 1, 1 & \\ & 0, 0 \end{matrix} \middle |{x} \right )} - \operatorname{Li}_{2}\left (e x\right ) & \text{otherwise} \end{cases} \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{\log \left (e x - 1\right )}{x}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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