Integrand size = 68, antiderivative size = 20 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=\log \left (\frac {4 x (-3-x+\log (4-x))}{-25+x}\right ) \]
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Time = 0.32 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.15, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.088, Rules used = {6873, 6860, 36, 31, 29, 6816} \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=-\log (25-x)+\log (x)+\log (x-\log (4-x)+3) \]
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Rule 29
Rule 31
Rule 36
Rule 6816
Rule 6860
Rule 6873
Rubi steps \begin{align*} \text {integral}& = \int \frac {300+150 x-55 x^2+x^3-(100-25 x) \log (4-x)}{x \left (100-29 x+x^2\right ) (3+x-\log (4-x))} \, dx \\ & = \int \left (-\frac {25}{(-25+x) x}+\frac {-5+x}{(-4+x) (3+x-\log (4-x))}\right ) \, dx \\ & = -\left (25 \int \frac {1}{(-25+x) x} \, dx\right )+\int \frac {-5+x}{(-4+x) (3+x-\log (4-x))} \, dx \\ & = \log (3+x-\log (4-x))-\int \frac {1}{-25+x} \, dx+\int \frac {1}{x} \, dx \\ & = -\log (25-x)+\log (x)+\log (3+x-\log (4-x)) \\ \end{align*}
Time = 0.23 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.15 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=-\log (25-x)+\log (x)+\log (3+x-\log (4-x)) \]
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Time = 0.26 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.10
method | result | size |
norman | \(-\ln \left (x -25\right )+\ln \left (x \right )+\ln \left (x -\ln \left (-x +4\right )+3\right )\) | \(22\) |
risch | \(-\ln \left (x -25\right )+\ln \left (x \right )+\ln \left (\ln \left (-x +4\right )-3-x \right )\) | \(22\) |
parallelrisch | \(-\ln \left (x -25\right )+\ln \left (x \right )+\ln \left (x -\ln \left (-x +4\right )+3\right )\) | \(22\) |
derivativedivides | \(-\ln \left (-x +25\right )+\ln \left (-x \right )+\ln \left (\ln \left (-x +4\right )-3-x \right )\) | \(26\) |
default | \(-\ln \left (-x +25\right )+\ln \left (-x \right )+\ln \left (\ln \left (-x +4\right )-3-x \right )\) | \(26\) |
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Time = 0.25 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.05 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=-\log \left (x - 25\right ) + \log \left (x\right ) + \log \left (-x + \log \left (-x + 4\right ) - 3\right ) \]
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Time = 0.10 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.85 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=\log {\left (x \right )} - \log {\left (x - 25 \right )} + \log {\left (- x + \log {\left (4 - x \right )} - 3 \right )} \]
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Time = 0.25 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.05 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=-\log \left (x - 25\right ) + \log \left (x\right ) + \log \left (-x + \log \left (-x + 4\right ) - 3\right ) \]
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Time = 0.27 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.25 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=\log \left (-x\right ) + \log \left (x - \log \left (-x + 4\right ) + 3\right ) - \log \left (-x + 25\right ) \]
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Time = 11.64 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.05 \[ \int \frac {-300-150 x+55 x^2-x^3+(100-25 x) \log (4-x)}{-300 x-13 x^2+26 x^3-x^4+\left (100 x-29 x^2+x^3\right ) \log (4-x)} \, dx=\ln \left (x-\ln \left (4-x\right )+3\right )+2\,\mathrm {atanh}\left (\frac {2\,x}{25}-1\right ) \]
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