Integrand size = 36, antiderivative size = 21 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=5+5 \log \left (\frac {16 \log \left (\frac {1}{2} (5-e) x\right )}{x}\right ) \]
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Time = 0.06 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.90, number of steps used = 5, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.083, Rules used = {2494, 2412, 45} \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=5 \log \left (\log \left (\frac {1}{2} (5-e) x\right )\right )-5 \log (x) \]
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Rule 45
Rule 2412
Rule 2494
Rubi steps \begin{align*} \text {integral}& = \int \frac {5-5 \log \left (\frac {1}{2} (5-e) x\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx \\ & = \int \frac {5-5 \log \left (\frac {1}{2} (5-e) x\right )}{x \log \left (\frac {1}{2} (5-e) x\right )} \, dx \\ & = \text {Subst}\left (\int \frac {5-5 x}{x} \, dx,x,\log \left (\frac {1}{2} (5-e) x\right )\right ) \\ & = \text {Subst}\left (\int \left (-5+\frac {5}{x}\right ) \, dx,x,\log \left (\frac {1}{2} (5-e) x\right )\right ) \\ & = -5 \log (x)+5 \log \left (\log \left (\frac {1}{2} (5-e) x\right )\right ) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.81 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=-5 \log (x)+5 \log \left (\log \left (-\frac {1}{2} (-5+e) x\right )\right ) \]
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Time = 0.09 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.90
method | result | size |
risch | \(-5 \ln \left (x \right )+5 \ln \left (\ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )\right )\) | \(19\) |
parts | \(-5 \ln \left (x \right )+5 \ln \left (\ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )\right )\) | \(19\) |
derivativedivides | \(-5 \ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )+5 \ln \left (\ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )\right )\) | \(27\) |
default | \(-5 \ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )+5 \ln \left (\ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )\right )\) | \(27\) |
norman | \(-5 \ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )+5 \ln \left (\ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )\right )\) | \(27\) |
parallelrisch | \(-5 \ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )+5 \ln \left (\ln \left (-\frac {x \,{\mathrm e}}{2}+\frac {5 x}{2}\right )\right )\) | \(27\) |
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Time = 0.24 (sec) , antiderivative size = 26, normalized size of antiderivative = 1.24 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=-5 \, \log \left (-\frac {1}{2} \, x e + \frac {5}{2} \, x\right ) + 5 \, \log \left (\log \left (-\frac {1}{2} \, x e + \frac {5}{2} \, x\right )\right ) \]
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Time = 0.05 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.95 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=- 5 \log {\left (x \right )} + 5 \log {\left (\log {\left (- \frac {e x}{2} + \frac {5 x}{2} \right )} \right )} \]
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Time = 0.19 (sec) , antiderivative size = 26, normalized size of antiderivative = 1.24 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=-5 \, \log \left (-\frac {1}{2} \, x e + \frac {5}{2} \, x\right ) + 5 \, \log \left (\log \left (-\frac {1}{2} \, x e + \frac {5}{2} \, x\right )\right ) \]
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Time = 0.26 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.86 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=-5 \, \log \left (x\right ) + 5 \, \log \left (\log \left (-\frac {1}{2} \, x e + \frac {5}{2} \, x\right )\right ) \]
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Time = 8.74 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.86 \[ \int \frac {5-5 \log \left (\frac {1}{2} (5 x-e x)\right )}{x \log \left (\frac {1}{2} (5 x-e x)\right )} \, dx=5\,\ln \left (\ln \left (\frac {5\,x}{2}-\frac {x\,\mathrm {e}}{2}\right )\right )-5\,\ln \left (x\right ) \]
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