Integrand size = 16, antiderivative size = 68 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=\frac {1}{12 (1-x)}+\frac {1}{36 (2-x)}-\frac {1}{36 (1+x)}+\frac {1}{18} \log (1-x)-\frac {35}{432} \log (2-x)+\frac {1}{54} \log (1+x)+\frac {1}{144} \log (2+x) \]
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Time = 0.04 (sec) , antiderivative size = 68, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {1600, 2099} \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=\frac {1}{12 (1-x)}+\frac {1}{36 (2-x)}-\frac {1}{36 (x+1)}+\frac {1}{18} \log (1-x)-\frac {35}{432} \log (2-x)+\frac {1}{54} \log (x+1)+\frac {1}{144} \log (x+2) \]
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Rule 1600
Rule 2099
Rubi steps \begin{align*} \text {integral}& = \int \frac {1}{(2+x) \left (2-x-2 x^2+x^3\right )^2} \, dx \\ & = \int \left (\frac {1}{36 (-2+x)^2}-\frac {35}{432 (-2+x)}+\frac {1}{12 (-1+x)^2}+\frac {1}{18 (-1+x)}+\frac {1}{36 (1+x)^2}+\frac {1}{54 (1+x)}+\frac {1}{144 (2+x)}\right ) \, dx \\ & = \frac {1}{12 (1-x)}+\frac {1}{36 (2-x)}-\frac {1}{36 (1+x)}+\frac {1}{18} \log (1-x)-\frac {35}{432} \log (2-x)+\frac {1}{54} \log (1+x)+\frac {1}{144} \log (2+x) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.88 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=\frac {1}{432} \left (\frac {12 \left (5+6 x-5 x^2\right )}{2-x-2 x^2+x^3}+24 \log (1-x)-35 \log (2-x)+8 \log (1+x)+3 \log (2+x)\right ) \]
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Time = 0.07 (sec) , antiderivative size = 47, normalized size of antiderivative = 0.69
method | result | size |
default | \(\frac {\ln \left (x +2\right )}{144}-\frac {1}{36 \left (x +1\right )}+\frac {\ln \left (x +1\right )}{54}-\frac {1}{12 \left (x -1\right )}+\frac {\ln \left (x -1\right )}{18}-\frac {1}{36 \left (x -2\right )}-\frac {35 \ln \left (x -2\right )}{432}\) | \(47\) |
risch | \(\frac {-\frac {5}{36} x^{2}+\frac {1}{6} x +\frac {5}{36}}{x^{3}-2 x^{2}-x +2}-\frac {35 \ln \left (x -2\right )}{432}+\frac {\ln \left (x -1\right )}{18}+\frac {\ln \left (x +1\right )}{54}+\frac {\ln \left (x +2\right )}{144}\) | \(52\) |
norman | \(\frac {-\frac {1}{9} x^{2}+\frac {17}{36} x -\frac {5}{36} x^{3}+\frac {5}{18}}{x^{4}-5 x^{2}+4}-\frac {35 \ln \left (x -2\right )}{432}+\frac {\ln \left (x -1\right )}{18}+\frac {\ln \left (x +1\right )}{54}+\frac {\ln \left (x +2\right )}{144}\) | \(54\) |
parallelrisch | \(-\frac {35 \ln \left (x -2\right ) x^{3}-24 \ln \left (x -1\right ) x^{3}-8 \ln \left (x +1\right ) x^{3}-3 \ln \left (x +2\right ) x^{3}-60-70 \ln \left (x -2\right ) x^{2}+48 \ln \left (x -1\right ) x^{2}+16 \ln \left (x +1\right ) x^{2}+6 \ln \left (x +2\right ) x^{2}-35 \ln \left (x -2\right ) x +24 \ln \left (x -1\right ) x +8 \ln \left (x +1\right ) x +3 \ln \left (x +2\right ) x +60 x^{2}+70 \ln \left (x -2\right )-48 \ln \left (x -1\right )-16 \ln \left (x +1\right )-6 \ln \left (x +2\right )-72 x}{432 \left (x^{3}-2 x^{2}-x +2\right )}\) | \(152\) |
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Leaf count of result is larger than twice the leaf count of optimal. 103 vs. \(2 (50) = 100\).
Time = 0.25 (sec) , antiderivative size = 103, normalized size of antiderivative = 1.51 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=-\frac {60 \, x^{2} - 3 \, {\left (x^{3} - 2 \, x^{2} - x + 2\right )} \log \left (x + 2\right ) - 8 \, {\left (x^{3} - 2 \, x^{2} - x + 2\right )} \log \left (x + 1\right ) - 24 \, {\left (x^{3} - 2 \, x^{2} - x + 2\right )} \log \left (x - 1\right ) + 35 \, {\left (x^{3} - 2 \, x^{2} - x + 2\right )} \log \left (x - 2\right ) - 72 \, x - 60}{432 \, {\left (x^{3} - 2 \, x^{2} - x + 2\right )}} \]
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Time = 0.16 (sec) , antiderivative size = 53, normalized size of antiderivative = 0.78 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=\frac {- 5 x^{2} + 6 x + 5}{36 x^{3} - 72 x^{2} - 36 x + 72} - \frac {35 \log {\left (x - 2 \right )}}{432} + \frac {\log {\left (x - 1 \right )}}{18} + \frac {\log {\left (x + 1 \right )}}{54} + \frac {\log {\left (x + 2 \right )}}{144} \]
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Time = 0.19 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.76 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=-\frac {5 \, x^{2} - 6 \, x - 5}{36 \, {\left (x^{3} - 2 \, x^{2} - x + 2\right )}} + \frac {1}{144} \, \log \left (x + 2\right ) + \frac {1}{54} \, \log \left (x + 1\right ) + \frac {1}{18} \, \log \left (x - 1\right ) - \frac {35}{432} \, \log \left (x - 2\right ) \]
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Time = 0.30 (sec) , antiderivative size = 56, normalized size of antiderivative = 0.82 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=-\frac {5 \, x^{2} - 6 \, x - 5}{36 \, {\left (x + 1\right )} {\left (x - 1\right )} {\left (x - 2\right )}} + \frac {1}{144} \, \log \left ({\left | x + 2 \right |}\right ) + \frac {1}{54} \, \log \left ({\left | x + 1 \right |}\right ) + \frac {1}{18} \, \log \left ({\left | x - 1 \right |}\right ) - \frac {35}{432} \, \log \left ({\left | x - 2 \right |}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.76 \[ \int \frac {2+x}{\left (4-5 x^2+x^4\right )^2} \, dx=\frac {\ln \left (x-1\right )}{18}+\frac {\ln \left (x+1\right )}{54}-\frac {35\,\ln \left (x-2\right )}{432}+\frac {\ln \left (x+2\right )}{144}-\frac {-\frac {5\,x^2}{36}+\frac {x}{6}+\frac {5}{36}}{-x^3+2\,x^2+x-2} \]
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