Integrand size = 23, antiderivative size = 18 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x+\log (x)-\log \left (\frac {-2+2 x}{(1+x)^2}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.087, Rules used = {1607, 1816} \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x-\log (1-x)+\log (x)+2 \log (x+1) \]
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Rule 1607
Rule 1816
Rubi steps \begin{align*} \text {integral}& = \int \frac {-1-4 x+2 x^2+x^3}{x \left (-1+x^2\right )} \, dx \\ & = \int \left (1+\frac {1}{1-x}+\frac {1}{x}+\frac {2}{1+x}\right ) \, dx \\ & = x-\log (1-x)+\log (x)+2 \log (1+x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.00 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x-\log (1-x)+\log (x)+2 \log (1+x) \]
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Time = 0.54 (sec) , antiderivative size = 17, normalized size of antiderivative = 0.94
method | result | size |
default | \(x +\ln \left (x \right )+2 \ln \left (1+x \right )-\ln \left (-1+x \right )\) | \(17\) |
norman | \(x +\ln \left (x \right )+2 \ln \left (1+x \right )-\ln \left (-1+x \right )\) | \(17\) |
risch | \(x +\ln \left (x \right )+2 \ln \left (1+x \right )-\ln \left (-1+x \right )\) | \(17\) |
parallelrisch | \(x +\ln \left (x \right )+2 \ln \left (1+x \right )-\ln \left (-1+x \right )\) | \(17\) |
meijerg | \(\ln \left (x \right )+\frac {i \pi }{2}+\frac {\ln \left (-x^{2}+1\right )}{2}-\frac {i \left (2 i x -2 i \operatorname {arctanh}\left (x \right )\right )}{2}+4 \,\operatorname {arctanh}\left (x \right )\) | \(35\) |
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none
Time = 0.25 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.89 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x + 2 \, \log \left (x + 1\right ) - \log \left (x - 1\right ) + \log \left (x\right ) \]
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Time = 0.06 (sec) , antiderivative size = 15, normalized size of antiderivative = 0.83 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x + \log {\left (x \right )} - \log {\left (x - 1 \right )} + 2 \log {\left (x + 1 \right )} \]
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none
Time = 0.18 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.89 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x + 2 \, \log \left (x + 1\right ) - \log \left (x - 1\right ) + \log \left (x\right ) \]
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none
Time = 0.26 (sec) , antiderivative size = 19, normalized size of antiderivative = 1.06 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x + 2 \, \log \left ({\left | x + 1 \right |}\right ) - \log \left ({\left | x - 1 \right |}\right ) + \log \left ({\left | x \right |}\right ) \]
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Time = 0.06 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.22 \[ \int \frac {-1-4 x+2 x^2+x^3}{-x+x^3} \, dx=x+2\,\ln \left (x+1\right )-2\,\mathrm {atanh}\left (\frac {48}{2\,x+6}-7\right ) \]
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