Integrand size = 15, antiderivative size = 24 \[ \int \frac {-x+x^3}{6+2 x} \, dx=4 x-\frac {3 x^2}{4}+\frac {x^3}{6}-12 \log (3+x) \]
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Time = 0.01 (sec) , antiderivative size = 24, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {1607, 786} \[ \int \frac {-x+x^3}{6+2 x} \, dx=\frac {x^3}{6}-\frac {3 x^2}{4}+4 x-12 \log (x+3) \]
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Rule 786
Rule 1607
Rubi steps \begin{align*} \text {integral}& = \int \frac {x \left (-1+x^2\right )}{6+2 x} \, dx \\ & = \int \left (4-\frac {3 x}{2}+\frac {x^2}{2}-\frac {12}{3+x}\right ) \, dx \\ & = 4 x-\frac {3 x^2}{4}+\frac {x^3}{6}-12 \log (3+x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.29 \[ \int \frac {-x+x^3}{6+2 x} \, dx=\frac {1}{2} \left (\frac {93}{2}+8 x-\frac {3 x^2}{2}+\frac {x^3}{3}-24 \log (3+x)\right ) \]
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Time = 0.78 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.88
method | result | size |
default | \(4 x -\frac {3 x^{2}}{4}+\frac {x^{3}}{6}-12 \ln \left (3+x \right )\) | \(21\) |
risch | \(4 x -\frac {3 x^{2}}{4}+\frac {x^{3}}{6}-12 \ln \left (3+x \right )\) | \(21\) |
parallelrisch | \(4 x -\frac {3 x^{2}}{4}+\frac {x^{3}}{6}-12 \ln \left (3+x \right )\) | \(21\) |
norman | \(4 x -\frac {3 x^{2}}{4}+\frac {x^{3}}{6}-12 \ln \left (6+2 x \right )\) | \(23\) |
meijerg | \(\frac {3 x \left (\frac {4}{9} x^{2}-2 x +12\right )}{8}-12 \ln \left (1+\frac {x}{3}\right )-\frac {x}{2}\) | \(26\) |
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Time = 0.27 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.83 \[ \int \frac {-x+x^3}{6+2 x} \, dx=\frac {1}{6} \, x^{3} - \frac {3}{4} \, x^{2} + 4 \, x - 12 \, \log \left (x + 3\right ) \]
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Time = 0.03 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.83 \[ \int \frac {-x+x^3}{6+2 x} \, dx=\frac {x^{3}}{6} - \frac {3 x^{2}}{4} + 4 x - 12 \log {\left (x + 3 \right )} \]
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Time = 0.18 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.83 \[ \int \frac {-x+x^3}{6+2 x} \, dx=\frac {1}{6} \, x^{3} - \frac {3}{4} \, x^{2} + 4 \, x - 12 \, \log \left (x + 3\right ) \]
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Time = 0.27 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.88 \[ \int \frac {-x+x^3}{6+2 x} \, dx=\frac {1}{6} \, x^{3} - \frac {3}{4} \, x^{2} + 4 \, x - 12 \, \log \left ({\left | x + 3 \right |}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.83 \[ \int \frac {-x+x^3}{6+2 x} \, dx=4\,x-12\,\ln \left (x+3\right )-\frac {3\,x^2}{4}+\frac {x^3}{6} \]
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