Integrand size = 14, antiderivative size = 14 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=-\frac {1}{2 (1+x)^2}+\log (1+x) \]
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Time = 0.00 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.071, Rules used = {697} \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=\log (x+1)-\frac {1}{2 (x+1)^2} \]
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Rule 697
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {1}{(1+x)^3}+\frac {1}{1+x}\right ) \, dx \\ & = -\frac {1}{2 (1+x)^2}+\log (1+x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=-\frac {1}{2 (1+x)^2}+\log (1+x) \]
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Time = 15.88 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.93
method | result | size |
default | \(-\frac {1}{2 \left (1+x \right )^{2}}+\ln \left (1+x \right )\) | \(13\) |
norman | \(-\frac {1}{2 \left (1+x \right )^{2}}+\ln \left (1+x \right )\) | \(13\) |
risch | \(-\frac {1}{2 \left (1+x \right )^{2}}+\ln \left (1+x \right )\) | \(13\) |
parallelrisch | \(\frac {2 \ln \left (1+x \right ) x^{2}-1+4 \ln \left (1+x \right ) x +2 \ln \left (1+x \right )}{2 \left (1+x \right )^{2}}\) | \(32\) |
meijerg | \(\frac {x \left (2+x \right )}{\left (1+x \right )^{2}}-\frac {x \left (9 x +6\right )}{6 \left (1+x \right )^{2}}+\ln \left (1+x \right )+\frac {x^{2}}{\left (1+x \right )^{2}}\) | \(38\) |
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Leaf count of result is larger than twice the leaf count of optimal. 28 vs. \(2 (12) = 24\).
Time = 0.58 (sec) , antiderivative size = 28, normalized size of antiderivative = 2.00 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=\frac {2 \, {\left (x^{2} + 2 \, x + 1\right )} \log \left (x + 1\right ) - 1}{2 \, {\left (x^{2} + 2 \, x + 1\right )}} \]
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Time = 0.03 (sec) , antiderivative size = 15, normalized size of antiderivative = 1.07 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=\log {\left (x + 1 \right )} - \frac {1}{2 x^{2} + 4 x + 2} \]
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none
Time = 0.19 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.21 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=-\frac {1}{2 \, {\left (x^{2} + 2 \, x + 1\right )}} + \log \left (x + 1\right ) \]
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none
Time = 0.26 (sec) , antiderivative size = 13, normalized size of antiderivative = 0.93 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=-\frac {1}{2 \, {\left (x + 1\right )}^{2}} + \log \left ({\left | x + 1 \right |}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 12, normalized size of antiderivative = 0.86 \[ \int \frac {2+2 x+x^2}{(1+x)^3} \, dx=\ln \left (x+1\right )-\frac {1}{2\,{\left (x+1\right )}^2} \]
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