Integrand size = 16, antiderivative size = 28 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {x^3}{3}+\frac {1}{6} \log \left (1+x^3\right )-\frac {3}{2} \log \left (3+x^3\right ) \]
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Time = 0.01 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {1371, 717, 646, 31} \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {x^3}{3}+\frac {1}{6} \log \left (x^3+1\right )-\frac {3}{2} \log \left (x^3+3\right ) \]
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Rule 31
Rule 646
Rule 717
Rule 1371
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \text {Subst}\left (\int \frac {x^2}{3+4 x+x^2} \, dx,x,x^3\right ) \\ & = \frac {x^3}{3}+\frac {1}{3} \text {Subst}\left (\int \frac {-3-4 x}{3+4 x+x^2} \, dx,x,x^3\right ) \\ & = \frac {x^3}{3}+\frac {1}{6} \text {Subst}\left (\int \frac {1}{1+x} \, dx,x,x^3\right )-\frac {3}{2} \text {Subst}\left (\int \frac {1}{3+x} \, dx,x,x^3\right ) \\ & = \frac {x^3}{3}+\frac {1}{6} \log \left (1+x^3\right )-\frac {3}{2} \log \left (3+x^3\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.00 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {x^3}{3}+\frac {1}{6} \log \left (1+x^3\right )-\frac {3}{2} \log \left (3+x^3\right ) \]
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Time = 0.05 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.82
method | result | size |
default | \(\frac {x^{3}}{3}+\frac {\ln \left (x^{3}+1\right )}{6}-\frac {3 \ln \left (x^{3}+3\right )}{2}\) | \(23\) |
risch | \(\frac {x^{3}}{3}+\frac {\ln \left (x^{3}+1\right )}{6}-\frac {3 \ln \left (x^{3}+3\right )}{2}\) | \(23\) |
norman | \(\frac {x^{3}}{3}+\frac {\ln \left (x +1\right )}{6}-\frac {3 \ln \left (x^{3}+3\right )}{2}+\frac {\ln \left (x^{2}-x +1\right )}{6}\) | \(32\) |
parallelrisch | \(\frac {x^{3}}{3}+\frac {\ln \left (x +1\right )}{6}-\frac {3 \ln \left (x^{3}+3\right )}{2}+\frac {\ln \left (x^{2}-x +1\right )}{6}\) | \(32\) |
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Time = 0.25 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {1}{3} \, x^{3} - \frac {3}{2} \, \log \left (x^{3} + 3\right ) + \frac {1}{6} \, \log \left (x^{3} + 1\right ) \]
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Time = 0.05 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {x^{3}}{3} + \frac {\log {\left (x^{3} + 1 \right )}}{6} - \frac {3 \log {\left (x^{3} + 3 \right )}}{2} \]
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Time = 0.20 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {1}{3} \, x^{3} - \frac {3}{2} \, \log \left (x^{3} + 3\right ) + \frac {1}{6} \, \log \left (x^{3} + 1\right ) \]
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Time = 0.29 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.86 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {1}{3} \, x^{3} - \frac {3}{2} \, \log \left ({\left | x^{3} + 3 \right |}\right ) + \frac {1}{6} \, \log \left ({\left | x^{3} + 1 \right |}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.79 \[ \int \frac {x^8}{3+4 x^3+x^6} \, dx=\frac {\ln \left (x^3+1\right )}{6}-\frac {3\,\ln \left (x^3+3\right )}{2}+\frac {x^3}{3} \]
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