Integrand size = 12, antiderivative size = 11 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log (a+b \log (x))}{b} \]
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Time = 0.02 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {2339, 29} \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log (a+b \log (x))}{b} \]
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Rule 29
Rule 2339
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int \frac {1}{x} \, dx,x,a+b \log (x)\right )}{b} \\ & = \frac {\log (a+b \log (x))}{b} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log (a+b \log (x))}{b} \]
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Time = 0.03 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.09
method | result | size |
derivativedivides | \(\frac {\ln \left (a +b \ln \left (x \right )\right )}{b}\) | \(12\) |
default | \(\frac {\ln \left (a +b \ln \left (x \right )\right )}{b}\) | \(12\) |
norman | \(\frac {\ln \left (a +b \ln \left (x \right )\right )}{b}\) | \(12\) |
parallelrisch | \(\frac {\ln \left (a +b \ln \left (x \right )\right )}{b}\) | \(12\) |
risch | \(\frac {\ln \left (\ln \left (x \right )+\frac {a}{b}\right )}{b}\) | \(14\) |
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none
Time = 0.23 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log \left (b \log \left (x\right ) + a\right )}{b} \]
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Time = 0.05 (sec) , antiderivative size = 8, normalized size of antiderivative = 0.73 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log {\left (\frac {a}{b} + \log {\left (x \right )} \right )}}{b} \]
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none
Time = 0.20 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log \left (b \log \left (x\right ) + a\right )}{b} \]
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Leaf count of result is larger than twice the leaf count of optimal. 30 vs. \(2 (11) = 22\).
Time = 0.27 (sec) , antiderivative size = 30, normalized size of antiderivative = 2.73 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\log \left (\frac {1}{4} \, \pi ^{2} b^{2} {\left (\mathrm {sgn}\left (x\right ) - 1\right )}^{2} + {\left (b \log \left ({\left | x \right |}\right ) + a\right )}^{2}\right )}{2 \, b} \]
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Time = 0.35 (sec) , antiderivative size = 11, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x (a+b \log (x))} \, dx=\frac {\ln \left (a+b\,\ln \left (x\right )\right )}{b} \]
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