Integrand size = 37, antiderivative size = 22 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=3+\frac {4 e^{-2 x} x^2}{25 \log ^2\left (-\frac {2 x}{5}\right )} \]
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Time = 0.15 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.91, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.081, Rules used = {12, 6873, 2326} \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=\frac {4 e^{-2 x} x^2}{25 \log ^2\left (-\frac {2 x}{5}\right )} \]
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Rule 12
Rule 2326
Rule 6873
Rubi steps \begin{align*} \text {integral}& = \frac {1}{25} \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{\log ^3\left (-\frac {2 x}{5}\right )} \, dx \\ & = \frac {1}{25} \int \frac {8 e^{-2 x} x \left (-1+\log \left (-\frac {2 x}{5}\right )-x \log \left (-\frac {2 x}{5}\right )\right )}{\log ^3\left (-\frac {2 x}{5}\right )} \, dx \\ & = \frac {8}{25} \int \frac {e^{-2 x} x \left (-1+\log \left (-\frac {2 x}{5}\right )-x \log \left (-\frac {2 x}{5}\right )\right )}{\log ^3\left (-\frac {2 x}{5}\right )} \, dx \\ & = \frac {4 e^{-2 x} x^2}{25 \log ^2\left (-\frac {2 x}{5}\right )} \\ \end{align*}
Time = 0.12 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.91 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=\frac {4 e^{-2 x} x^2}{25 \log ^2\left (-\frac {2 x}{5}\right )} \]
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Time = 0.38 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.73
method | result | size |
risch | \(\frac {4 \,{\mathrm e}^{-2 x} x^{2}}{25 \ln \left (-\frac {2 x}{5}\right )^{2}}\) | \(16\) |
parallelrisch | \(\frac {4 \,{\mathrm e}^{-2 x} x^{2}}{25 \ln \left (-\frac {2 x}{5}\right )^{2}}\) | \(16\) |
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Time = 0.24 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.68 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=\frac {4 \, x^{2} e^{\left (-2 \, x\right )}}{25 \, \log \left (-\frac {2}{5} \, x\right )^{2}} \]
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Time = 0.10 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.91 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=\frac {4 x^{2} e^{- 2 x}}{25 \log {\left (- \frac {2 x}{5} \right )}^{2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 58 vs. \(2 (17) = 34\).
Time = 0.30 (sec) , antiderivative size = 58, normalized size of antiderivative = 2.64 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=-\frac {4 \, x^{2}}{25 \, {\left (2 \, {\left (\log \left (5\right ) - \log \left (2\right )\right )} e^{\left (2 \, x\right )} \log \left (-x\right ) - e^{\left (2 \, x\right )} \log \left (-x\right )^{2} - {\left (\log \left (5\right )^{2} - 2 \, \log \left (5\right ) \log \left (2\right ) + \log \left (2\right )^{2}\right )} e^{\left (2 \, x\right )}\right )}} \]
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Time = 0.26 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.68 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=\frac {4 \, x^{2} e^{\left (-2 \, x\right )}}{25 \, \log \left (-\frac {2}{5} \, x\right )^{2}} \]
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Time = 9.80 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.68 \[ \int \frac {e^{-2 x} \left (-8 x+\left (8 x-8 x^2\right ) \log \left (-\frac {2 x}{5}\right )\right )}{25 \log ^3\left (-\frac {2 x}{5}\right )} \, dx=\frac {4\,x^2\,{\mathrm {e}}^{-2\,x}}{25\,{\ln \left (-\frac {2\,x}{5}\right )}^2} \]
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