Integrand size = 66, antiderivative size = 16 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x \log \left (\frac {1}{-1-\frac {2 \log (2+x)}{x}}\right ) \]
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Time = 0.38 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps used = 11, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.045, Rules used = {6820, 6874, 2629} \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x \log \left (-\frac {x}{x+2 \log (x+2)}\right ) \]
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Rule 2629
Rule 6820
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {2 x}{(2+x) (x+2 \log (2+x))}+\frac {2 \log (2+x)}{x+2 \log (2+x)}+\log \left (-\frac {x}{x+2 \log (2+x)}\right )\right ) \, dx \\ & = -\left (2 \int \frac {x}{(2+x) (x+2 \log (2+x))} \, dx\right )+2 \int \frac {\log (2+x)}{x+2 \log (2+x)} \, dx+\int \log \left (-\frac {x}{x+2 \log (2+x)}\right ) \, dx \\ & = x \log \left (-\frac {x}{x+2 \log (2+x)}\right )+2 \int \left (\frac {1}{2}-\frac {x}{2 (x+2 \log (2+x))}\right ) \, dx-2 \int \left (\frac {1}{x+2 \log (2+x)}-\frac {2}{(2+x) (x+2 \log (2+x))}\right ) \, dx-\int \frac {-2 x+2 (2+x) \log (2+x)}{(2+x) (x+2 \log (2+x))} \, dx \\ & = x+x \log \left (-\frac {x}{x+2 \log (2+x)}\right )-2 \int \frac {1}{x+2 \log (2+x)} \, dx+4 \int \frac {1}{(2+x) (x+2 \log (2+x))} \, dx-\int \frac {x}{x+2 \log (2+x)} \, dx-\int \left (1-\frac {x (4+x)}{(2+x) (x+2 \log (2+x))}\right ) \, dx \\ & = x \log \left (-\frac {x}{x+2 \log (2+x)}\right )-2 \int \frac {1}{x+2 \log (2+x)} \, dx+4 \int \frac {1}{(2+x) (x+2 \log (2+x))} \, dx-\int \frac {x}{x+2 \log (2+x)} \, dx+\int \frac {x (4+x)}{(2+x) (x+2 \log (2+x))} \, dx \\ & = x \log \left (-\frac {x}{x+2 \log (2+x)}\right )-2 \int \frac {1}{x+2 \log (2+x)} \, dx+4 \int \frac {1}{(2+x) (x+2 \log (2+x))} \, dx-\int \frac {x}{x+2 \log (2+x)} \, dx+\int \left (\frac {2}{x+2 \log (2+x)}+\frac {x}{x+2 \log (2+x)}-\frac {4}{(2+x) (x+2 \log (2+x))}\right ) \, dx \\ & = x \log \left (-\frac {x}{x+2 \log (2+x)}\right ) \\ \end{align*}
Time = 0.27 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x \log \left (-\frac {x}{x+2 \log (2+x)}\right ) \]
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Time = 0.86 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06
method | result | size |
norman | \(\ln \left (-\frac {x}{2 \ln \left (2+x \right )+x}\right ) x\) | \(17\) |
parallelrisch | \(\ln \left (-\frac {x}{2 \ln \left (2+x \right )+x}\right ) x\) | \(17\) |
default | \(\ln \left (\frac {x}{-2 \ln \left (2+x \right )-x}\right ) x\) | \(18\) |
parts | \(\ln \left (\frac {x}{-2 \ln \left (2+x \right )-x}\right ) x\) | \(18\) |
risch | \(-x \ln \left (2 \ln \left (2+x \right )+x \right )+x \ln \left (x \right )-i \pi x \operatorname {csgn}\left (\frac {i x}{2 \ln \left (2+x \right )+x}\right )^{2}+\frac {i \pi x \,\operatorname {csgn}\left (\frac {i}{2 \ln \left (2+x \right )+x}\right ) \operatorname {csgn}\left (\frac {i x}{2 \ln \left (2+x \right )+x}\right )^{2}}{2}-\frac {i \pi x \,\operatorname {csgn}\left (\frac {i}{2 \ln \left (2+x \right )+x}\right ) \operatorname {csgn}\left (\frac {i x}{2 \ln \left (2+x \right )+x}\right ) \operatorname {csgn}\left (i x \right )}{2}+\frac {i \pi x \operatorname {csgn}\left (\frac {i x}{2 \ln \left (2+x \right )+x}\right )^{3}}{2}+\frac {i \pi x \operatorname {csgn}\left (\frac {i x}{2 \ln \left (2+x \right )+x}\right )^{2} \operatorname {csgn}\left (i x \right )}{2}+i \pi x\) | \(169\) |
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Time = 0.25 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x \log \left (-\frac {x}{x + 2 \, \log \left (x + 2\right )}\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 34 vs. \(2 (15) = 30\).
Time = 0.32 (sec) , antiderivative size = 34, normalized size of antiderivative = 2.12 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=\left (x + \frac {1}{3}\right ) \log {\left (- \frac {x}{x + 2 \log {\left (x + 2 \right )}} \right )} - \frac {\log {\left (x \right )}}{3} + \frac {\log {\left (\frac {x}{2} + \log {\left (x + 2 \right )} \right )}}{3} \]
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Time = 0.23 (sec) , antiderivative size = 19, normalized size of antiderivative = 1.19 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x \log \left (x\right ) - x \log \left (-x - 2 \, \log \left (x + 2\right )\right ) \]
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Time = 0.30 (sec) , antiderivative size = 19, normalized size of antiderivative = 1.19 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x \log \left (-x\right ) - x \log \left (x + 2 \, \log \left (x + 2\right )\right ) \]
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Time = 13.45 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00 \[ \int \frac {-2 x+(4+2 x) \log (2+x)+\left (2 x+x^2+(4+2 x) \log (2+x)\right ) \log \left (-\frac {x}{x+2 \log (2+x)}\right )}{2 x+x^2+(4+2 x) \log (2+x)} \, dx=x\,\ln \left (-\frac {x}{x+2\,\ln \left (x+2\right )}\right ) \]
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