Integrand size = 21, antiderivative size = 27 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=-x+\frac {x^2}{2}-\log (1-x)+3 \log (x)+\log (2+x) \]
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Time = 0.03 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.095, Rules used = {1608, 1642} \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=\frac {x^2}{2}-x-\log (1-x)+3 \log (x)+\log (x+2) \]
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Rule 1608
Rule 1642
Rubi steps \begin{align*} \text {integral}& = \int \frac {-6+2 x+x^4}{x \left (-2+x+x^2\right )} \, dx \\ & = \int \left (-1+\frac {1}{1-x}+\frac {3}{x}+x+\frac {1}{2+x}\right ) \, dx \\ & = -x+\frac {x^2}{2}-\log (1-x)+3 \log (x)+\log (2+x) \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=-x+\frac {x^2}{2}-\log (1-x)+3 \log (x)+\log (2+x) \]
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Time = 0.03 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.89
method | result | size |
default | \(-x +\frac {x^{2}}{2}-\ln \left (-1+x \right )+\ln \left (2+x \right )+3 \ln \left (x \right )\) | \(24\) |
norman | \(-x +\frac {x^{2}}{2}-\ln \left (-1+x \right )+\ln \left (2+x \right )+3 \ln \left (x \right )\) | \(24\) |
risch | \(-x +\frac {x^{2}}{2}-\ln \left (-1+x \right )+\ln \left (2+x \right )+3 \ln \left (x \right )\) | \(24\) |
parallelrisch | \(-x +\frac {x^{2}}{2}-\ln \left (-1+x \right )+\ln \left (2+x \right )+3 \ln \left (x \right )\) | \(24\) |
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Time = 0.24 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.85 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=\frac {1}{2} \, x^{2} - x + \log \left (x + 2\right ) - \log \left (x - 1\right ) + 3 \, \log \left (x\right ) \]
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Time = 0.06 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.74 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=\frac {x^{2}}{2} - x + 3 \log {\left (x \right )} - \log {\left (x - 1 \right )} + \log {\left (x + 2 \right )} \]
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Time = 0.21 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.85 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=\frac {1}{2} \, x^{2} - x + \log \left (x + 2\right ) - \log \left (x - 1\right ) + 3 \, \log \left (x\right ) \]
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Time = 0.28 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.96 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=\frac {1}{2} \, x^{2} - x + \log \left ({\left | x + 2 \right |}\right ) - \log \left ({\left | x - 1 \right |}\right ) + 3 \, \log \left ({\left | x \right |}\right ) \]
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Time = 0.10 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.11 \[ \int \frac {-6+2 x+x^4}{-2 x+x^2+x^3} \, dx=3\,\ln \left (x\right )-x+\frac {x^2}{2}+\mathrm {atan}\left (\frac {192{}\mathrm {i}}{7\,\left (28\,x-40\right )}+\frac {9}{7}{}\mathrm {i}\right )\,2{}\mathrm {i} \]
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