Integrand size = 10, antiderivative size = 61 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {1-x}{16 \left (3+2 x-x^2\right )^2}+\frac {3 (1-x)}{128 \left (3+2 x-x^2\right )}+\frac {3}{512} \log (3-x)-\frac {3}{512} \log (1+x) \]
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Time = 0.01 (sec) , antiderivative size = 61, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.300, Rules used = {628, 630, 31} \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {3 (1-x)}{128 \left (-x^2+2 x+3\right )}+\frac {1-x}{16 \left (-x^2+2 x+3\right )^2}+\frac {3}{512} \log (3-x)-\frac {3}{512} \log (x+1) \]
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Rule 31
Rule 628
Rule 630
Rubi steps \begin{align*} \text {integral}& = \frac {1-x}{16 \left (3+2 x-x^2\right )^2}-\frac {3}{16} \int \frac {1}{\left (-3-2 x+x^2\right )^2} \, dx \\ & = \frac {1-x}{16 \left (3+2 x-x^2\right )^2}+\frac {3 (1-x)}{128 \left (3+2 x-x^2\right )}+\frac {3}{128} \int \frac {1}{-3-2 x+x^2} \, dx \\ & = \frac {1-x}{16 \left (3+2 x-x^2\right )^2}+\frac {3 (1-x)}{128 \left (3+2 x-x^2\right )}+\frac {3}{512} \int \frac {1}{-3+x} \, dx-\frac {3}{512} \int \frac {1}{1+x} \, dx \\ & = \frac {1-x}{16 \left (3+2 x-x^2\right )^2}+\frac {3 (1-x)}{128 \left (3+2 x-x^2\right )}+\frac {3}{512} \log (3-x)-\frac {3}{512} \log (1+x) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.75 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {1}{512} \left (\frac {4 \left (17-11 x-9 x^2+3 x^3\right )}{\left (-3-2 x+x^2\right )^2}+3 \log (3-x)-3 \log (1+x)\right ) \]
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Time = 0.24 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.66
method | result | size |
norman | \(\frac {-\frac {11}{128} x -\frac {9}{128} x^{2}+\frac {3}{128} x^{3}+\frac {17}{128}}{\left (x^{2}-2 x -3\right )^{2}}+\frac {3 \ln \left (-3+x \right )}{512}-\frac {3 \ln \left (1+x \right )}{512}\) | \(40\) |
risch | \(\frac {-\frac {11}{128} x -\frac {9}{128} x^{2}+\frac {3}{128} x^{3}+\frac {17}{128}}{\left (x^{2}-2 x -3\right )^{2}}+\frac {3 \ln \left (-3+x \right )}{512}-\frac {3 \ln \left (1+x \right )}{512}\) | \(40\) |
default | \(\frac {1}{128 \left (1+x \right )^{2}}+\frac {3}{256 \left (1+x \right )}-\frac {3 \ln \left (1+x \right )}{512}-\frac {1}{128 \left (-3+x \right )^{2}}+\frac {3}{256 \left (-3+x \right )}+\frac {3 \ln \left (-3+x \right )}{512}\) | \(42\) |
parallelrisch | \(-\frac {3 \ln \left (1+x \right ) x^{4}-3 \ln \left (-3+x \right ) x^{4}-68-12 \ln \left (1+x \right ) x^{3}+12 \ln \left (-3+x \right ) x^{3}-6 \ln \left (1+x \right ) x^{2}+6 \ln \left (-3+x \right ) x^{2}-12 x^{3}+36 \ln \left (1+x \right ) x -36 \ln \left (-3+x \right ) x +36 x^{2}+27 \ln \left (1+x \right )-27 \ln \left (-3+x \right )+44 x}{512 \left (x^{2}-2 x -3\right )^{2}}\) | \(108\) |
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Time = 0.25 (sec) , antiderivative size = 85, normalized size of antiderivative = 1.39 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {12 \, x^{3} - 36 \, x^{2} - 3 \, {\left (x^{4} - 4 \, x^{3} - 2 \, x^{2} + 12 \, x + 9\right )} \log \left (x + 1\right ) + 3 \, {\left (x^{4} - 4 \, x^{3} - 2 \, x^{2} + 12 \, x + 9\right )} \log \left (x - 3\right ) - 44 \, x + 68}{512 \, {\left (x^{4} - 4 \, x^{3} - 2 \, x^{2} + 12 \, x + 9\right )}} \]
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Time = 0.07 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.84 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {3 x^{3} - 9 x^{2} - 11 x + 17}{128 x^{4} - 512 x^{3} - 256 x^{2} + 1536 x + 1152} + \frac {3 \log {\left (x - 3 \right )}}{512} - \frac {3 \log {\left (x + 1 \right )}}{512} \]
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Time = 0.21 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.82 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {3 \, x^{3} - 9 \, x^{2} - 11 \, x + 17}{128 \, {\left (x^{4} - 4 \, x^{3} - 2 \, x^{2} + 12 \, x + 9\right )}} - \frac {3}{512} \, \log \left (x + 1\right ) + \frac {3}{512} \, \log \left (x - 3\right ) \]
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Time = 0.28 (sec) , antiderivative size = 42, normalized size of antiderivative = 0.69 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=\frac {3 \, x^{3} - 9 \, x^{2} - 11 \, x + 17}{128 \, {\left (x^{2} - 2 \, x - 3\right )}^{2}} - \frac {3}{512} \, \log \left ({\left | x + 1 \right |}\right ) + \frac {3}{512} \, \log \left ({\left | x - 3 \right |}\right ) \]
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Time = 0.14 (sec) , antiderivative size = 45, normalized size of antiderivative = 0.74 \[ \int \frac {1}{\left (-3-2 x+x^2\right )^3} \, dx=-\frac {3\,\ln \left (\frac {x+1}{x-3}\right )}{512}-6\,\left (\frac {1}{256\,\left (-x^2+2\,x+3\right )}+\frac {1}{96\,{\left (-x^2+2\,x+3\right )}^2}\right )\,\left (x-1\right ) \]
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