Integrand size = 20, antiderivative size = 21 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=-\frac {7}{3} \log (2+3 x)+\frac {11}{5} \log (3+5 x) \]
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Time = 0.01 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.050, Rules used = {78} \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=\frac {11}{5} \log (5 x+3)-\frac {7}{3} \log (3 x+2) \]
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Rule 78
Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {7}{2+3 x}+\frac {11}{3+5 x}\right ) \, dx \\ & = -\frac {7}{3} \log (2+3 x)+\frac {11}{5} \log (3+5 x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 21, normalized size of antiderivative = 1.00 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=-\frac {7}{3} \log (2+3 x)+\frac {11}{5} \log (3+5 x) \]
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Time = 1.83 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.67
method | result | size |
parallelrisch | \(-\frac {7 \ln \left (\frac {2}{3}+x \right )}{3}+\frac {11 \ln \left (x +\frac {3}{5}\right )}{5}\) | \(14\) |
default | \(-\frac {7 \ln \left (2+3 x \right )}{3}+\frac {11 \ln \left (3+5 x \right )}{5}\) | \(18\) |
norman | \(-\frac {7 \ln \left (2+3 x \right )}{3}+\frac {11 \ln \left (3+5 x \right )}{5}\) | \(18\) |
risch | \(-\frac {7 \ln \left (2+3 x \right )}{3}+\frac {11 \ln \left (3+5 x \right )}{5}\) | \(18\) |
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Time = 0.21 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.81 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=\frac {11}{5} \, \log \left (5 \, x + 3\right ) - \frac {7}{3} \, \log \left (3 \, x + 2\right ) \]
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Time = 0.05 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.90 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=\frac {11 \log {\left (x + \frac {3}{5} \right )}}{5} - \frac {7 \log {\left (x + \frac {2}{3} \right )}}{3} \]
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Time = 0.20 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.81 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=\frac {11}{5} \, \log \left (5 \, x + 3\right ) - \frac {7}{3} \, \log \left (3 \, x + 2\right ) \]
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Time = 0.29 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.90 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=\frac {11}{5} \, \log \left ({\left | 5 \, x + 3 \right |}\right ) - \frac {7}{3} \, \log \left ({\left | 3 \, x + 2 \right |}\right ) \]
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Time = 0.06 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.62 \[ \int \frac {1-2 x}{(2+3 x) (3+5 x)} \, dx=\frac {11\,\ln \left (x+\frac {3}{5}\right )}{5}-\frac {7\,\ln \left (x+\frac {2}{3}\right )}{3} \]
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