Integrand size = 23, antiderivative size = 17 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=2 \log \left (\frac {5 (4+x) \log ^2(x)}{4 x}\right ) \]
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Time = 0.20 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.94, number of steps used = 10, number of rules used = 8, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.348, Rules used = {1607, 6873, 12, 6874, 36, 29, 31, 2339} \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=-2 \log (x)+2 \log (x+4)+4 \log (\log (x)) \]
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Rule 12
Rule 29
Rule 31
Rule 36
Rule 1607
Rule 2339
Rule 6873
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \int \frac {16+4 x-8 \log (x)}{x (4+x) \log (x)} \, dx \\ & = \int \frac {4 (4+x-2 \log (x))}{x (4+x) \log (x)} \, dx \\ & = 4 \int \frac {4+x-2 \log (x)}{x (4+x) \log (x)} \, dx \\ & = 4 \int \left (-\frac {2}{x (4+x)}+\frac {1}{x \log (x)}\right ) \, dx \\ & = 4 \int \frac {1}{x \log (x)} \, dx-8 \int \frac {1}{x (4+x)} \, dx \\ & = -\left (2 \int \frac {1}{x} \, dx\right )+2 \int \frac {1}{4+x} \, dx+4 \text {Subst}\left (\int \frac {1}{x} \, dx,x,\log (x)\right ) \\ & = -2 \log (x)+2 \log (4+x)+4 \log (\log (x)) \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.18 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=4 \left (-\frac {\log (x)}{2}+\frac {1}{2} \log (4+x)+\log (\log (x))\right ) \]
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Time = 0.44 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.00
method | result | size |
default | \(4 \ln \left (\ln \left (x \right )\right )-2 \ln \left (x \right )+2 \ln \left (4+x \right )\) | \(17\) |
norman | \(4 \ln \left (\ln \left (x \right )\right )-2 \ln \left (x \right )+2 \ln \left (4+x \right )\) | \(17\) |
risch | \(4 \ln \left (\ln \left (x \right )\right )-2 \ln \left (x \right )+2 \ln \left (4+x \right )\) | \(17\) |
parallelrisch | \(4 \ln \left (\ln \left (x \right )\right )-2 \ln \left (x \right )+2 \ln \left (4+x \right )\) | \(17\) |
parts | \(4 \ln \left (\ln \left (x \right )\right )-2 \ln \left (x \right )+2 \ln \left (4+x \right )\) | \(17\) |
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Time = 0.24 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.94 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=2 \, \log \left (x + 4\right ) - 2 \, \log \left (x\right ) + 4 \, \log \left (\log \left (x\right )\right ) \]
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Time = 0.08 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.00 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=- 2 \log {\left (x \right )} + 2 \log {\left (x + 4 \right )} + 4 \log {\left (\log {\left (x \right )} \right )} \]
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Time = 0.21 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.94 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=2 \, \log \left (x + 4\right ) - 2 \, \log \left (x\right ) + 4 \, \log \left (\log \left (x\right )\right ) \]
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Time = 0.27 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.94 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=2 \, \log \left (x + 4\right ) - 2 \, \log \left (x\right ) + 4 \, \log \left (\log \left (x\right )\right ) \]
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Time = 11.72 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.94 \[ \int \frac {16+4 x-8 \log (x)}{\left (4 x+x^2\right ) \log (x)} \, dx=2\,\ln \left (x+4\right )+4\,\ln \left (\ln \left (x\right )\right )-2\,\ln \left (x\right ) \]
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