Integrand size = 54, antiderivative size = 28 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=x \left (19-4 x^2-\log \left (\frac {e^{4+e^4}}{x-\log (x)}\right )\right ) \]
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\[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=\int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \left (-4 \left (1+\frac {e^4}{4}\right )+\frac {-1+20 x-12 x^3-19 \log (x)+12 x^2 \log (x)}{x-\log (x)}-\log \left (\frac {1}{x-\log (x)}\right )\right ) \, dx \\ & = -\left (\left (4+e^4\right ) x\right )+\int \frac {-1+20 x-12 x^3-19 \log (x)+12 x^2 \log (x)}{x-\log (x)} \, dx-\int \log \left (\frac {1}{x-\log (x)}\right ) \, dx \\ & = -\left (\left (4+e^4\right ) x\right )+\int \left (19-12 x^2+\frac {-1+x}{x-\log (x)}\right ) \, dx-\int \log \left (\frac {1}{x-\log (x)}\right ) \, dx \\ & = 19 x-\left (4+e^4\right ) x-4 x^3+\int \frac {-1+x}{x-\log (x)} \, dx-\int \log \left (\frac {1}{x-\log (x)}\right ) \, dx \\ & = 19 x-\left (4+e^4\right ) x-4 x^3+\int \left (\frac {x}{x-\log (x)}+\frac {1}{-x+\log (x)}\right ) \, dx-\int \log \left (\frac {1}{x-\log (x)}\right ) \, dx \\ & = 19 x-\left (4+e^4\right ) x-4 x^3+\int \frac {x}{x-\log (x)} \, dx+\int \frac {1}{-x+\log (x)} \, dx-\int \log \left (\frac {1}{x-\log (x)}\right ) \, dx \\ \end{align*}
Time = 0.16 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=-x \left (-15+e^4+4 x^2+\log \left (\frac {1}{x-\log (x)}\right )\right ) \]
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Time = 0.26 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.89
method | result | size |
risch | \(x \ln \left (x -\ln \left (x \right )\right )-\frac {x \left (-30+8 x^{2}+2 \,{\mathrm e}^{4}\right )}{2}\) | \(25\) |
default | \(-4 x^{3}-x \,{\mathrm e}^{4}+15 x -x \ln \left (\frac {1}{x -\ln \left (x \right )}\right )\) | \(27\) |
parallelrisch | \(-4 x^{3}-\ln \left (-\frac {{\mathrm e}^{4+{\mathrm e}^{4}}}{\ln \left (x \right )-x}\right ) x +19 x\) | \(29\) |
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Time = 0.25 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.96 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=-4 \, x^{3} - x \log \left (\frac {e^{\left (e^{4} + 4\right )}}{x - \log \left (x\right )}\right ) + 19 \, x \]
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Time = 0.15 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.86 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=- 4 x^{3} - x \log {\left (- \frac {e^{4 + e^{4}}}{- x + \log {\left (x \right )}} \right )} + 19 x \]
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Time = 0.24 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=-4 \, x^{3} - x {\left (e^{4} - 15\right )} + x \log \left (x - \log \left (x\right )\right ) \]
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Time = 0.27 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.82 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=-4 \, x^{3} - x e^{4} + x \log \left (x - \log \left (x\right )\right ) + 15 \, x \]
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Time = 13.61 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.93 \[ \int \frac {1-20 x+12 x^3+\left (19-12 x^2\right ) \log (x)+(x-\log (x)) \log \left (-\frac {e^{4+e^4}}{-x+\log (x)}\right )}{-x+\log (x)} \, dx=15\,x-x\,{\mathrm {e}}^4-x\,\ln \left (\frac {1}{x-\ln \left (x\right )}\right )-4\,x^3 \]
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