Optimal. Leaf size=13 \[ -f^a \text{Ei}\left (\frac{b \log (f)}{x}\right ) \]
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Rubi [A] time = 0.0183578, antiderivative size = 13, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.077, Rules used = {2210} \[ -f^a \text{Ei}\left (\frac{b \log (f)}{x}\right ) \]
Antiderivative was successfully verified.
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Rule 2210
Rubi steps
\begin{align*} \int \frac{f^{a+\frac{b}{x}}}{x} \, dx &=-f^a \text{Ei}\left (\frac{b \log (f)}{x}\right )\\ \end{align*}
Mathematica [A] time = 0.0019576, size = 13, normalized size = 1. \[ -f^a \text{Ei}\left (\frac{b \log (f)}{x}\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.056, size = 15, normalized size = 1.2 \begin{align*}{f}^{a}{\it Ei} \left ( 1,-{\frac{b\ln \left ( f \right ) }{x}} \right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.19228, size = 18, normalized size = 1.38 \begin{align*} -f^{a}{\rm Ei}\left (\frac{b \log \left (f\right )}{x}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.73477, size = 28, normalized size = 2.15 \begin{align*} -f^{a}{\rm Ei}\left (\frac{b \log \left (f\right )}{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{f^{a + \frac{b}{x}}}{x}\, 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{f^{a + \frac{b}{x}}}{x}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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