Integrand size = 32, antiderivative size = 71 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=-\frac {1}{3} \sqrt {\frac {5}{3}} \arctan \left (\frac {1-4 x}{\sqrt {15}}\right )+\frac {8 \arctan \left (\frac {1+2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}+\frac {2}{3} \log \left (1+x+x^2\right )-\frac {1}{6} \log \left (2-x+2 x^2\right ) \]
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Time = 0.05 (sec) , antiderivative size = 71, normalized size of antiderivative = 1.00, number of steps used = 10, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.156, Rules used = {2099, 648, 632, 210, 642} \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=-\frac {1}{3} \sqrt {\frac {5}{3}} \arctan \left (\frac {1-4 x}{\sqrt {15}}\right )+\frac {8 \arctan \left (\frac {2 x+1}{\sqrt {3}}\right )}{3 \sqrt {3}}+\frac {2}{3} \log \left (x^2+x+1\right )-\frac {1}{6} \log \left (2 x^2-x+2\right ) \]
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Rule 210
Rule 632
Rule 642
Rule 648
Rule 2099
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {2 (3+2 x)}{3 \left (1+x+x^2\right )}+\frac {3-2 x}{3 \left (2-x+2 x^2\right )}\right ) \, dx \\ & = \frac {1}{3} \int \frac {3-2 x}{2-x+2 x^2} \, dx+\frac {2}{3} \int \frac {3+2 x}{1+x+x^2} \, dx \\ & = -\left (\frac {1}{6} \int \frac {-1+4 x}{2-x+2 x^2} \, dx\right )+\frac {2}{3} \int \frac {1+2 x}{1+x+x^2} \, dx+\frac {5}{6} \int \frac {1}{2-x+2 x^2} \, dx+\frac {4}{3} \int \frac {1}{1+x+x^2} \, dx \\ & = \frac {2}{3} \log \left (1+x+x^2\right )-\frac {1}{6} \log \left (2-x+2 x^2\right )-\frac {5}{3} \text {Subst}\left (\int \frac {1}{-15-x^2} \, dx,x,-1+4 x\right )-\frac {8}{3} \text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1+2 x\right ) \\ & = -\frac {1}{3} \sqrt {\frac {5}{3}} \tan ^{-1}\left (\frac {1-4 x}{\sqrt {15}}\right )+\frac {8 \tan ^{-1}\left (\frac {1+2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}+\frac {2}{3} \log \left (1+x+x^2\right )-\frac {1}{6} \log \left (2-x+2 x^2\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 65, normalized size of antiderivative = 0.92 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=\frac {1}{18} \left (16 \sqrt {3} \arctan \left (\frac {1+2 x}{\sqrt {3}}\right )+2 \sqrt {15} \arctan \left (\frac {-1+4 x}{\sqrt {15}}\right )+12 \log \left (1+x+x^2\right )-3 \log \left (2-x+2 x^2\right )\right ) \]
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Time = 0.06 (sec) , antiderivative size = 56, normalized size of antiderivative = 0.79
method | result | size |
default | \(\frac {2 \ln \left (x^{2}+x +1\right )}{3}+\frac {8 \arctan \left (\frac {\left (1+2 x \right ) \sqrt {3}}{3}\right ) \sqrt {3}}{9}-\frac {\ln \left (2 x^{2}-x +2\right )}{6}+\frac {\sqrt {15}\, \arctan \left (\frac {\left (-1+4 x \right ) \sqrt {15}}{15}\right )}{9}\) | \(56\) |
risch | \(\frac {2 \ln \left (4 x^{2}+4 x +4\right )}{3}+\frac {8 \arctan \left (\frac {\left (1+2 x \right ) \sqrt {3}}{3}\right ) \sqrt {3}}{9}-\frac {\ln \left (16 x^{2}-8 x +16\right )}{6}+\frac {\sqrt {15}\, \arctan \left (\frac {\left (-1+4 x \right ) \sqrt {15}}{15}\right )}{9}\) | \(60\) |
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Time = 0.27 (sec) , antiderivative size = 61, normalized size of antiderivative = 0.86 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=\frac {1}{9} \, \sqrt {5} \sqrt {3} \arctan \left (\frac {1}{15} \, \sqrt {5} \sqrt {3} {\left (4 \, x - 1\right )}\right ) + \frac {8}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) - \frac {1}{6} \, \log \left (2 \, x^{2} - x + 2\right ) + \frac {2}{3} \, \log \left (x^{2} + x + 1\right ) \]
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Time = 0.12 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.06 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=- \frac {\log {\left (x^{2} - \frac {x}{2} + 1 \right )}}{6} + \frac {2 \log {\left (x^{2} + x + 1 \right )}}{3} + \frac {\sqrt {15} \operatorname {atan}{\left (\frac {4 \sqrt {15} x}{15} - \frac {\sqrt {15}}{15} \right )}}{9} + \frac {8 \sqrt {3} \operatorname {atan}{\left (\frac {2 \sqrt {3} x}{3} + \frac {\sqrt {3}}{3} \right )}}{9} \]
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Time = 0.28 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.77 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=\frac {1}{9} \, \sqrt {15} \arctan \left (\frac {1}{15} \, \sqrt {15} {\left (4 \, x - 1\right )}\right ) + \frac {8}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) - \frac {1}{6} \, \log \left (2 \, x^{2} - x + 2\right ) + \frac {2}{3} \, \log \left (x^{2} + x + 1\right ) \]
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Time = 0.31 (sec) , antiderivative size = 55, normalized size of antiderivative = 0.77 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=\frac {1}{9} \, \sqrt {15} \arctan \left (\frac {1}{15} \, \sqrt {15} {\left (4 \, x - 1\right )}\right ) + \frac {8}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) - \frac {1}{6} \, \log \left (2 \, x^{2} - x + 2\right ) + \frac {2}{3} \, \log \left (x^{2} + x + 1\right ) \]
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Time = 0.08 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.11 \[ \int \frac {5+x+3 x^2+2 x^3}{2+x+3 x^2+x^3+2 x^4} \, dx=-\ln \left (x+\frac {1}{2}-\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (-\frac {2}{3}+\frac {\sqrt {3}\,4{}\mathrm {i}}{9}\right )+\ln \left (x+\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (\frac {2}{3}+\frac {\sqrt {3}\,4{}\mathrm {i}}{9}\right )-\ln \left (x-\frac {1}{4}-\frac {\sqrt {15}\,1{}\mathrm {i}}{4}\right )\,\left (\frac {1}{6}+\frac {\sqrt {15}\,1{}\mathrm {i}}{18}\right )+\ln \left (x-\frac {1}{4}+\frac {\sqrt {15}\,1{}\mathrm {i}}{4}\right )\,\left (-\frac {1}{6}+\frac {\sqrt {15}\,1{}\mathrm {i}}{18}\right ) \]
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