Integrand size = 21, antiderivative size = 26 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=5-x \left (-2 x+x^2\right )+4 \log (5)-\log \left ((5-x)^2\right ) \]
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Time = 0.01 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.73, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.048, Rules used = {1864} \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=-x^3+2 x^2-2 \log (5-x) \]
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Rule 1864
Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {2}{-5+x}+4 x-3 x^2\right ) \, dx \\ & = 2 x^2-x^3-2 \log (5-x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.77 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=75+2 x^2-x^3-2 \log (5-x) \]
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Time = 0.52 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.69
method | result | size |
default | \(-x^{3}+2 x^{2}-2 \ln \left (-5+x \right )\) | \(18\) |
norman | \(-x^{3}+2 x^{2}-2 \ln \left (-5+x \right )\) | \(18\) |
risch | \(-x^{3}+2 x^{2}-2 \ln \left (-5+x \right )\) | \(18\) |
parallelrisch | \(-x^{3}+2 x^{2}-2 \ln \left (-5+x \right )\) | \(18\) |
meijerg | \(-2 \ln \left (1-\frac {x}{5}\right )-\frac {25 x \left (\frac {4}{25} x^{2}+\frac {6}{5} x +12\right )}{4}+\frac {95 x \left (\frac {3 x}{5}+6\right )}{6}-20 x\) | \(34\) |
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Time = 0.24 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.65 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=-x^{3} + 2 \, x^{2} - 2 \, \log \left (x - 5\right ) \]
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Time = 0.04 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.54 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=- x^{3} + 2 x^{2} - 2 \log {\left (x - 5 \right )} \]
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Time = 0.20 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.65 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=-x^{3} + 2 \, x^{2} - 2 \, \log \left (x - 5\right ) \]
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Time = 0.26 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.69 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=-x^{3} + 2 \, x^{2} - 2 \, \log \left ({\left | x - 5 \right |}\right ) \]
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Time = 12.04 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.65 \[ \int \frac {-2-20 x+19 x^2-3 x^3}{-5+x} \, dx=2\,x^2-2\,\ln \left (x-5\right )-x^3 \]
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