Integrand size = 23, antiderivative size = 46 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=-\frac {1}{2 x}+\frac {\arctan \left (\frac {1+2 x}{\sqrt {7}}\right )}{4 \sqrt {7}}-\frac {\log (x)}{4}+\frac {5}{8} \log \left (2+x+x^2\right ) \]
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Time = 0.04 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.261, Rules used = {1608, 1642, 648, 632, 210, 642} \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=\frac {\arctan \left (\frac {2 x+1}{\sqrt {7}}\right )}{4 \sqrt {7}}+\frac {5}{8} \log \left (x^2+x+2\right )-\frac {1}{2 x}-\frac {\log (x)}{4} \]
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Rule 210
Rule 632
Rule 642
Rule 648
Rule 1608
Rule 1642
Rubi steps \begin{align*} \text {integral}& = \int \frac {1+x^2+x^3}{x^2 \left (2+x+x^2\right )} \, dx \\ & = \int \left (\frac {1}{2 x^2}-\frac {1}{4 x}+\frac {3+5 x}{4 \left (2+x+x^2\right )}\right ) \, dx \\ & = -\frac {1}{2 x}-\frac {\log (x)}{4}+\frac {1}{4} \int \frac {3+5 x}{2+x+x^2} \, dx \\ & = -\frac {1}{2 x}-\frac {\log (x)}{4}+\frac {1}{8} \int \frac {1}{2+x+x^2} \, dx+\frac {5}{8} \int \frac {1+2 x}{2+x+x^2} \, dx \\ & = -\frac {1}{2 x}-\frac {\log (x)}{4}+\frac {5}{8} \log \left (2+x+x^2\right )-\frac {1}{4} \text {Subst}\left (\int \frac {1}{-7-x^2} \, dx,x,1+2 x\right ) \\ & = -\frac {1}{2 x}+\frac {\tan ^{-1}\left (\frac {1+2 x}{\sqrt {7}}\right )}{4 \sqrt {7}}-\frac {\log (x)}{4}+\frac {5}{8} \log \left (2+x+x^2\right ) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.00 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=-\frac {1}{2 x}+\frac {\arctan \left (\frac {1+2 x}{\sqrt {7}}\right )}{4 \sqrt {7}}-\frac {\log (x)}{4}+\frac {5}{8} \log \left (2+x+x^2\right ) \]
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Time = 0.06 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.78
method | result | size |
default | \(-\frac {1}{2 x}-\frac {\ln \left (x \right )}{4}+\frac {5 \ln \left (x^{2}+x +2\right )}{8}+\frac {\arctan \left (\frac {\left (1+2 x \right ) \sqrt {7}}{7}\right ) \sqrt {7}}{28}\) | \(36\) |
risch | \(-\frac {1}{2 x}+\frac {5 \ln \left (4 x^{2}+4 x +8\right )}{8}+\frac {\arctan \left (\frac {\left (1+2 x \right ) \sqrt {7}}{7}\right ) \sqrt {7}}{28}-\frac {\ln \left (x \right )}{4}\) | \(40\) |
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Time = 0.32 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.85 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=\frac {2 \, \sqrt {7} x \arctan \left (\frac {1}{7} \, \sqrt {7} {\left (2 \, x + 1\right )}\right ) + 35 \, x \log \left (x^{2} + x + 2\right ) - 14 \, x \log \left (x\right ) - 28}{56 \, x} \]
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Time = 0.08 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.00 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=- \frac {\log {\left (x \right )}}{4} + \frac {5 \log {\left (x^{2} + x + 2 \right )}}{8} + \frac {\sqrt {7} \operatorname {atan}{\left (\frac {2 \sqrt {7} x}{7} + \frac {\sqrt {7}}{7} \right )}}{28} - \frac {1}{2 x} \]
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Time = 0.27 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.76 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=\frac {1}{28} \, \sqrt {7} \arctan \left (\frac {1}{7} \, \sqrt {7} {\left (2 \, x + 1\right )}\right ) - \frac {1}{2 \, x} + \frac {5}{8} \, \log \left (x^{2} + x + 2\right ) - \frac {1}{4} \, \log \left (x\right ) \]
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Time = 0.27 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.78 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=\frac {1}{28} \, \sqrt {7} \arctan \left (\frac {1}{7} \, \sqrt {7} {\left (2 \, x + 1\right )}\right ) - \frac {1}{2 \, x} + \frac {5}{8} \, \log \left (x^{2} + x + 2\right ) - \frac {1}{4} \, \log \left ({\left | x \right |}\right ) \]
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Time = 9.43 (sec) , antiderivative size = 49, normalized size of antiderivative = 1.07 \[ \int \frac {1+x^2+x^3}{2 x^2+x^3+x^4} \, dx=-\frac {\ln \left (x\right )}{4}-\ln \left (x+\frac {1}{2}-\frac {\sqrt {7}\,1{}\mathrm {i}}{2}\right )\,\left (-\frac {5}{8}+\frac {\sqrt {7}\,1{}\mathrm {i}}{56}\right )+\ln \left (x+\frac {1}{2}+\frac {\sqrt {7}\,1{}\mathrm {i}}{2}\right )\,\left (\frac {5}{8}+\frac {\sqrt {7}\,1{}\mathrm {i}}{56}\right )-\frac {1}{2\,x} \]
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