Integrand size = 25, antiderivative size = 16 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=2+3 x-x^2+\log (-2+x)+\log (x) \]
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Time = 0.02 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.080, Rules used = {1607, 1634} \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=-x^2+3 x+\log (2-x)+\log (x) \]
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Rule 1607
Rule 1634
Rubi steps \begin{align*} \text {integral}& = \int \frac {-2-4 x+7 x^2-2 x^3}{(-2+x) x} \, dx \\ & = \int \left (3+\frac {1}{-2+x}+\frac {1}{x}-2 x\right ) \, dx \\ & = 3 x-x^2+\log (2-x)+\log (x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=3 x-x^2+\log (2-x)+\log (x) \]
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Time = 0.36 (sec) , antiderivative size = 16, normalized size of antiderivative = 1.00
method | result | size |
default | \(3 x -x^{2}+\ln \left (x \right )+\ln \left (-2+x \right )\) | \(16\) |
norman | \(3 x -x^{2}+\ln \left (x \right )+\ln \left (-2+x \right )\) | \(16\) |
parallelrisch | \(3 x -x^{2}+\ln \left (x \right )+\ln \left (-2+x \right )\) | \(16\) |
risch | \(-x^{2}+3 x +\ln \left (x^{2}-2 x \right )\) | \(18\) |
meijerg | \(\ln \left (x \right )-\ln \left (2\right )+i \pi +\ln \left (1-\frac {x}{2}\right )-\frac {2 x \left (\frac {3 x}{2}+6\right )}{3}+7 x\) | \(29\) |
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Time = 0.24 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=-x^{2} + 3 \, x + \log \left (x^{2} - 2 \, x\right ) \]
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Time = 0.06 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.88 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=- x^{2} + 3 x + \log {\left (x^{2} - 2 x \right )} \]
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Time = 0.20 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=-x^{2} + 3 \, x + \log \left (x - 2\right ) + \log \left (x\right ) \]
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Time = 0.26 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=-x^{2} + 3 \, x + \log \left ({\left | x - 2 \right |}\right ) + \log \left ({\left | x \right |}\right ) \]
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Time = 8.12 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.94 \[ \int \frac {-2-4 x+7 x^2-2 x^3}{-2 x+x^2} \, dx=3\,x+\ln \left (x\,\left (x-2\right )\right )-x^2 \]
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