Integrand size = 68, antiderivative size = 21 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x \log \left (\frac {x}{e^{39-e^3-x}+x}\right ) \]
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Time = 0.21 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.059, Rules used = {6820, 6874, 2628, 12} \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x \log \left (\frac {x}{x+e^{-x-e^3+39}}\right ) \]
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Rule 12
Rule 2628
Rule 6820
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {e^{39} (1+x)}{e^{39}+e^{e^3+x} x}+\log \left (\frac {x}{e^{39-e^3-x}+x}\right )\right ) \, dx \\ & = e^{39} \int \frac {1+x}{e^{39}+e^{e^3+x} x} \, dx+\int \log \left (\frac {x}{e^{39-e^3-x}+x}\right ) \, dx \\ & = x \log \left (\frac {x}{e^{39-e^3-x}+x}\right )+e^{39} \int \left (\frac {1}{e^{39}+e^{e^3+x} x}+\frac {x}{e^{39}+e^{e^3+x} x}\right ) \, dx-\int \frac {e^{39} (1+x)}{e^{39}+e^{e^3+x} x} \, dx \\ & = x \log \left (\frac {x}{e^{39-e^3-x}+x}\right )+e^{39} \int \frac {1}{e^{39}+e^{e^3+x} x} \, dx+e^{39} \int \frac {x}{e^{39}+e^{e^3+x} x} \, dx-e^{39} \int \frac {1+x}{e^{39}+e^{e^3+x} x} \, dx \\ & = x \log \left (\frac {x}{e^{39-e^3-x}+x}\right )+e^{39} \int \frac {1}{e^{39}+e^{e^3+x} x} \, dx+e^{39} \int \frac {x}{e^{39}+e^{e^3+x} x} \, dx-e^{39} \int \left (\frac {1}{e^{39}+e^{e^3+x} x}+\frac {x}{e^{39}+e^{e^3+x} x}\right ) \, dx \\ & = x \log \left (\frac {x}{e^{39-e^3-x}+x}\right ) \\ \end{align*}
Time = 0.60 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x \log \left (\frac {x}{e^{39-e^3-x}+x}\right ) \]
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Time = 0.14 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.95
method | result | size |
norman | \(x \ln \left (\frac {x}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right )\) | \(20\) |
parallelrisch | \(x \ln \left (\frac {x}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right )\) | \(20\) |
risch | \(-x \ln \left ({\mathrm e}^{-{\mathrm e}^{3}-x +39}+x \right )+x \ln \left (x \right )-\frac {i x \pi \,\operatorname {csgn}\left (i x \right ) \operatorname {csgn}\left (\frac {i}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right ) \operatorname {csgn}\left (\frac {i x}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right )}{2}+\frac {i x \pi \,\operatorname {csgn}\left (i x \right ) \operatorname {csgn}\left (\frac {i x}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right )^{2}}{2}+\frac {i x \pi \,\operatorname {csgn}\left (\frac {i}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right ) \operatorname {csgn}\left (\frac {i x}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right )^{2}}{2}-\frac {i x \pi \operatorname {csgn}\left (\frac {i x}{{\mathrm e}^{-{\mathrm e}^{3}-x +39}+x}\right )^{3}}{2}\) | \(170\) |
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Time = 0.31 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.90 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x \log \left (\frac {x}{x + e^{\left (-x - e^{3} + 39\right )}}\right ) \]
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Time = 0.13 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.67 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x \log {\left (\frac {x}{x + e^{- x - e^{3} + 39}} \right )} \]
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Time = 0.24 (sec) , antiderivative size = 26, normalized size of antiderivative = 1.24 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x^{2} + x e^{3} - x \log \left (x e^{\left (x + e^{3}\right )} + e^{39}\right ) + x \log \left (x\right ) \]
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Time = 0.31 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=-x \log \left (x + e^{\left (-x - e^{3} + 39\right )}\right ) + x \log \left (x\right ) \]
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Time = 13.67 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \frac {e^{39-e^3-x} (1+x)+\left (e^{39-e^3-x}+x\right ) \log \left (\frac {x}{e^{39-e^3-x}+x}\right )}{e^{39-e^3-x}+x} \, dx=x\,\ln \left (\frac {x}{x+{\mathrm {e}}^{-{\mathrm {e}}^3}\,{\mathrm {e}}^{-x}\,{\mathrm {e}}^{39}}\right ) \]
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