Integrand size = 25, antiderivative size = 23 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log (a+b \log (c (e+f x)))}{b d f} \]
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Time = 0.05 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.160, Rules used = {2437, 12, 2339, 29} \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log (a+b \log (c (e+f x)))}{b d f} \]
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Rule 12
Rule 29
Rule 2339
Rule 2437
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int \frac {1}{d x (a+b \log (c x))} \, dx,x,e+f x\right )}{f} \\ & = \frac {\text {Subst}\left (\int \frac {1}{x (a+b \log (c x))} \, dx,x,e+f x\right )}{d f} \\ & = \frac {\text {Subst}\left (\int \frac {1}{x} \, dx,x,a+b \log (c (e+f x))\right )}{b d f} \\ & = \frac {\log (a+b \log (c (e+f x)))}{b d f} \\ \end{align*}
Time = 0.04 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.00 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log (a+b \log (c (e+f x)))}{b d f} \]
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Time = 0.52 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.04
method | result | size |
norman | \(\frac {\ln \left (a +b \ln \left (c \left (f x +e \right )\right )\right )}{b d f}\) | \(24\) |
parallelrisch | \(\frac {\ln \left (a +b \ln \left (c \left (f x +e \right )\right )\right )}{b d f}\) | \(24\) |
derivativedivides | \(\frac {\ln \left (a +b \ln \left (c f x +c e \right )\right )}{f d b}\) | \(25\) |
default | \(\frac {\ln \left (a +b \ln \left (c f x +c e \right )\right )}{f d b}\) | \(25\) |
risch | \(\frac {\ln \left (\ln \left (c \left (f x +e \right )\right )+\frac {a}{b}\right )}{b d f}\) | \(26\) |
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Time = 0.29 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.04 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log \left (b \log \left (c f x + c e\right ) + a\right )}{b d f} \]
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Time = 0.09 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.74 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log {\left (\frac {a}{b} + \log {\left (c \left (e + f x\right ) \right )} \right )}}{b d f} \]
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Time = 0.46 (sec) , antiderivative size = 29, normalized size of antiderivative = 1.26 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log \left (\frac {b \log \left (f x + e\right ) + b \log \left (c\right ) + a}{b}\right )}{b d f} \]
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Time = 0.31 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.04 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\log \left (b \log \left (c f x + c e\right ) + a\right )}{b d f} \]
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Time = 2.05 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.00 \[ \int \frac {1}{(d e+d f x) (a+b \log (c (e+f x)))} \, dx=\frac {\ln \left (a+b\,\ln \left (c\,\left (e+f\,x\right )\right )\right )}{b\,d\,f} \]
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