Integrand size = 32, antiderivative size = 14 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=\frac {3}{1+x}+x \log (3 x) \]
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Time = 0.04 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {27, 6874, 697, 2332} \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=\frac {3}{x+1}+x \log (3 x) \]
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Rule 27
Rule 697
Rule 2332
Rule 6874
Rubi steps \begin{align*} \text {integral}& = \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{(1+x)^2} \, dx \\ & = \int \left (\frac {-2+2 x+x^2}{(1+x)^2}+\log (3 x)\right ) \, dx \\ & = \int \frac {-2+2 x+x^2}{(1+x)^2} \, dx+\int \log (3 x) \, dx \\ & = -x+x \log (3 x)+\int \left (1-\frac {3}{(1+x)^2}\right ) \, dx \\ & = \frac {3}{1+x}+x \log (3 x) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=\frac {3}{1+x}+x \log (3 x) \]
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Time = 1.72 (sec) , antiderivative size = 15, normalized size of antiderivative = 1.07
method | result | size |
risch | \(\frac {3}{1+x}+x \ln \left (3 x \right )\) | \(15\) |
parts | \(\frac {3}{1+x}+x \ln \left (3 x \right )\) | \(15\) |
derivativedivides | \(\frac {9}{3 x +3}+x \ln \left (3 x \right )\) | \(17\) |
default | \(\frac {9}{3 x +3}+x \ln \left (3 x \right )\) | \(17\) |
norman | \(\frac {x \ln \left (3 x \right )+x^{2} \ln \left (3 x \right )+3}{1+x}\) | \(23\) |
parallelrisch | \(\frac {x \ln \left (3 x \right )+x^{2} \ln \left (3 x \right )+3}{1+x}\) | \(23\) |
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Time = 0.25 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.29 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=\frac {{\left (x^{2} + x\right )} \log \left (3 \, x\right ) + 3}{x + 1} \]
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Time = 0.07 (sec) , antiderivative size = 10, normalized size of antiderivative = 0.71 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=x \log {\left (3 x \right )} + \frac {3}{x + 1} \]
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Leaf count of result is larger than twice the leaf count of optimal. 51 vs. \(2 (14) = 28\).
Time = 0.31 (sec) , antiderivative size = 51, normalized size of antiderivative = 3.64 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=x + \frac {x^{2} {\left (\log \left (3\right ) - 1\right )} + x^{2} \log \left (x\right ) + x {\left (\log \left (3\right ) - 1\right )} + \log \left (3\right )}{x + 1} - \frac {\log \left (3 \, x\right )}{x + 1} + \frac {3}{x + 1} + \log \left (x\right ) \]
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Time = 0.26 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=x \log \left (3 \, x\right ) + \frac {3}{x + 1} \]
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Time = 9.14 (sec) , antiderivative size = 14, normalized size of antiderivative = 1.00 \[ \int \frac {-2+2 x+x^2+\left (1+2 x+x^2\right ) \log (3 x)}{1+2 x+x^2} \, dx=x\,\ln \left (3\,x\right )+\frac {3}{x+1} \]
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