Optimal. Leaf size=77 \[ x+\frac {x^2}{2}+\frac {1}{6} \sqrt {\frac {5}{3}} \tan ^{-1}\left (\frac {1-4 x}{\sqrt {15}}\right )+\frac {2 \tan ^{-1}\left (\frac {1+2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}-\log \left (1+x+x^2\right )+\frac {1}{4} \log \left (2-x+2 x^2\right ) \]
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Rubi [A]
time = 0.08, antiderivative size = 77, normalized size of antiderivative = 1.00, number of steps
used = 10, number of rules used = 5, integrand size = 35, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {2100, 648,
632, 210, 642} \begin {gather*} \frac {1}{6} \sqrt {\frac {5}{3}} \text {ArcTan}\left (\frac {1-4 x}{\sqrt {15}}\right )+\frac {2 \text {ArcTan}\left (\frac {2 x+1}{\sqrt {3}}\right )}{3 \sqrt {3}}+\frac {x^2}{2}-\log \left (x^2+x+1\right )+\frac {1}{4} \log \left (2 x^2-x+2\right )+x \end {gather*}
Antiderivative was successfully verified.
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Rule 210
Rule 632
Rule 642
Rule 648
Rule 2100
Rubi steps
\begin {align*} \int \frac {x^2 \left (5+x+3 x^2+2 x^3\right )}{2+x+3 x^2+x^3+2 x^4} \, dx &=\int \left (1+x-\frac {2 (1+3 x)}{3 \left (1+x+x^2\right )}+\frac {-2+3 x}{3 \left (2-x+2 x^2\right )}\right ) \, dx\\ &=x+\frac {x^2}{2}+\frac {1}{3} \int \frac {-2+3 x}{2-x+2 x^2} \, dx-\frac {2}{3} \int \frac {1+3 x}{1+x+x^2} \, dx\\ &=x+\frac {x^2}{2}+\frac {1}{4} \int \frac {-1+4 x}{2-x+2 x^2} \, dx+\frac {1}{3} \int \frac {1}{1+x+x^2} \, dx-\frac {5}{12} \int \frac {1}{2-x+2 x^2} \, dx-\int \frac {1+2 x}{1+x+x^2} \, dx\\ &=x+\frac {x^2}{2}-\log \left (1+x+x^2\right )+\frac {1}{4} \log \left (2-x+2 x^2\right )-\frac {2}{3} \text {Subst}\left (\int \frac {1}{-3-x^2} \, dx,x,1+2 x\right )+\frac {5}{6} \text {Subst}\left (\int \frac {1}{-15-x^2} \, dx,x,-1+4 x\right )\\ &=x+\frac {x^2}{2}+\frac {1}{6} \sqrt {\frac {5}{3}} \tan ^{-1}\left (\frac {1-4 x}{\sqrt {15}}\right )+\frac {2 \tan ^{-1}\left (\frac {1+2 x}{\sqrt {3}}\right )}{3 \sqrt {3}}-\log \left (1+x+x^2\right )+\frac {1}{4} \log \left (2-x+2 x^2\right )\\ \end {align*}
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Mathematica [A]
time = 0.02, size = 72, normalized size = 0.94 \begin {gather*} \frac {1}{36} \left (8 \sqrt {3} \tan ^{-1}\left (\frac {1+2 x}{\sqrt {3}}\right )-2 \sqrt {15} \tan ^{-1}\left (\frac {-1+4 x}{\sqrt {15}}\right )+9 \left (2 x (2+x)-4 \log \left (1+x+x^2\right )+\log \left (2-x+2 x^2\right )\right )\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.03, size = 62, normalized size = 0.81
method | result | size |
default | \(x +\frac {x^{2}}{2}-\ln \left (x^{2}+x +1\right )+\frac {2 \arctan \left (\frac {\left (2 x +1\right ) \sqrt {3}}{3}\right ) \sqrt {3}}{9}+\frac {\ln \left (2 x^{2}-x +2\right )}{4}-\frac {\sqrt {15}\, \arctan \left (\frac {\left (4 x -1\right ) \sqrt {15}}{15}\right )}{18}\) | \(62\) |
risch | \(x +\frac {x^{2}}{2}+\frac {\ln \left (16 x^{2}-8 x +16\right )}{4}-\frac {\sqrt {15}\, \arctan \left (\frac {\left (4 x -1\right ) \sqrt {15}}{15}\right )}{18}-\ln \left (4 x^{2}+4 x +4\right )+\frac {2 \arctan \left (\frac {\left (2 x +1\right ) \sqrt {3}}{3}\right ) \sqrt {3}}{9}\) | \(66\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.50, size = 61, normalized size = 0.79 \begin {gather*} \frac {1}{2} \, x^{2} - \frac {1}{18} \, \sqrt {15} \arctan \left (\frac {1}{15} \, \sqrt {15} {\left (4 \, x - 1\right )}\right ) + \frac {2}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) + x + \frac {1}{4} \, \log \left (2 \, x^{2} - x + 2\right ) - \log \left (x^{2} + x + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.38, size = 67, normalized size = 0.87 \begin {gather*} \frac {1}{2} \, x^{2} - \frac {1}{18} \, \sqrt {5} \sqrt {3} \arctan \left (\frac {1}{15} \, \sqrt {5} \sqrt {3} {\left (4 \, x - 1\right )}\right ) + \frac {2}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) + x + \frac {1}{4} \, \log \left (2 \, x^{2} - x + 2\right ) - \log \left (x^{2} + x + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.10, size = 78, normalized size = 1.01 \begin {gather*} \frac {x^{2}}{2} + x + \frac {\log {\left (x^{2} - \frac {x}{2} + 1 \right )}}{4} - \log {\left (x^{2} + x + 1 \right )} - \frac {\sqrt {15} \operatorname {atan}{\left (\frac {4 \sqrt {15} x}{15} - \frac {\sqrt {15}}{15} \right )}}{18} + \frac {2 \sqrt {3} \operatorname {atan}{\left (\frac {2 \sqrt {3} x}{3} + \frac {\sqrt {3}}{3} \right )}}{9} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 5.43, size = 61, normalized size = 0.79 \begin {gather*} \frac {1}{2} \, x^{2} - \frac {1}{18} \, \sqrt {15} \arctan \left (\frac {1}{15} \, \sqrt {15} {\left (4 \, x - 1\right )}\right ) + \frac {2}{9} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (2 \, x + 1\right )}\right ) + x + \frac {1}{4} \, \log \left (2 \, x^{2} - x + 2\right ) - \log \left (x^{2} + x + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 2.29, size = 85, normalized size = 1.10 \begin {gather*} x-\ln \left (x+\frac {1}{2}-\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (1+\frac {\sqrt {3}\,1{}\mathrm {i}}{9}\right )+\ln \left (x+\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (-1+\frac {\sqrt {3}\,1{}\mathrm {i}}{9}\right )+\ln \left (x-\frac {1}{4}-\frac {\sqrt {15}\,1{}\mathrm {i}}{4}\right )\,\left (\frac {1}{4}+\frac {\sqrt {15}\,1{}\mathrm {i}}{36}\right )-\ln \left (x-\frac {1}{4}+\frac {\sqrt {15}\,1{}\mathrm {i}}{4}\right )\,\left (-\frac {1}{4}+\frac {\sqrt {15}\,1{}\mathrm {i}}{36}\right )+\frac {x^2}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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