Integrand size = 10, antiderivative size = 8 \[ \int \frac {a^x b^x}{x} \, dx=\operatorname {ExpIntegralEi}(x (\log (a)+\log (b))) \]
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Time = 0.02 (sec) , antiderivative size = 8, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {2325, 2209} \[ \int \frac {a^x b^x}{x} \, dx=\operatorname {ExpIntegralEi}(x (\log (a)+\log (b))) \]
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Rule 2209
Rule 2325
Rubi steps \begin{align*} \text {integral}& = \int \frac {e^{x (\log (a)+\log (b))}}{x} \, dx \\ & = \text {Ei}(x (\log (a)+\log (b))) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 10, normalized size of antiderivative = 1.25 \[ \int \frac {a^x b^x}{x} \, dx=\operatorname {ExpIntegralEi}(x \log (a)+x \log (b)) \]
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Result contains complex when optimal does not.
Time = 0.03 (sec) , antiderivative size = 56, normalized size of antiderivative = 7.00
method | result | size |
meijerg | \(\ln \left (x \right )+i \pi +\ln \left (\ln \left (b \right )\right )+\ln \left (1+\frac {\ln \left (a \right )}{\ln \left (b \right )}\right )-\ln \left (-x \ln \left (b \right ) \left (1+\frac {\ln \left (a \right )}{\ln \left (b \right )}\right )\right )-\operatorname {Ei}_{1}\left (-x \ln \left (b \right ) \left (1+\frac {\ln \left (a \right )}{\ln \left (b \right )}\right )\right )\) | \(56\) |
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none
Time = 0.31 (sec) , antiderivative size = 10, normalized size of antiderivative = 1.25 \[ \int \frac {a^x b^x}{x} \, dx={\rm Ei}\left (x \log \left (a\right ) + x \log \left (b\right )\right ) \]
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\[ \int \frac {a^x b^x}{x} \, dx=\int \frac {a^{x} b^{x}}{x}\, dx \]
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none
Time = 0.24 (sec) , antiderivative size = 8, normalized size of antiderivative = 1.00 \[ \int \frac {a^x b^x}{x} \, dx={\rm Ei}\left (x {\left (\log \left (a\right ) + \log \left (b\right )\right )}\right ) \]
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\[ \int \frac {a^x b^x}{x} \, dx=\int { \frac {a^{x} b^{x}}{x} \,d x } \]
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Time = 0.03 (sec) , antiderivative size = 8, normalized size of antiderivative = 1.00 \[ \int \frac {a^x b^x}{x} \, dx=\mathrm {ei}\left (x\,\left (\ln \left (a\right )+\ln \left (b\right )\right )\right ) \]
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