Integrand size = 15, antiderivative size = 30 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=-\frac {5 \arctan \left (\sqrt {\frac {3}{2}} x\right )}{\sqrt {6}}+\frac {1}{3} \log \left (2+3 x^2\right ) \]
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Time = 0.01 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {649, 209, 266} \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=\frac {1}{3} \log \left (3 x^2+2\right )-\frac {5 \arctan \left (\sqrt {\frac {3}{2}} x\right )}{\sqrt {6}} \]
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Rule 209
Rule 266
Rule 649
Rubi steps \begin{align*} \text {integral}& = 2 \int \frac {x}{2+3 x^2} \, dx-5 \int \frac {1}{2+3 x^2} \, dx \\ & = -\frac {5 \arctan \left (\sqrt {\frac {3}{2}} x\right )}{\sqrt {6}}+\frac {1}{3} \log \left (2+3 x^2\right ) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.00 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=-\frac {5 \arctan \left (\sqrt {\frac {3}{2}} x\right )}{\sqrt {6}}+\frac {1}{3} \log \left (2+3 x^2\right ) \]
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Time = 0.19 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.80
method | result | size |
default | \(\frac {\ln \left (3 x^{2}+2\right )}{3}-\frac {5 \arctan \left (\frac {x \sqrt {6}}{2}\right ) \sqrt {6}}{6}\) | \(24\) |
risch | \(\frac {\ln \left (9 x^{2}+6\right )}{3}-\frac {5 \arctan \left (\frac {x \sqrt {6}}{2}\right ) \sqrt {6}}{6}\) | \(24\) |
meijerg | \(-\frac {5 \sqrt {6}\, \arctan \left (\frac {x \sqrt {2}\, \sqrt {3}}{2}\right )}{6}+\frac {\ln \left (1+\frac {3 x^{2}}{2}\right )}{3}\) | \(27\) |
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Time = 0.26 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.77 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=-\frac {5}{6} \, \sqrt {6} \arctan \left (\frac {1}{2} \, \sqrt {6} x\right ) + \frac {1}{3} \, \log \left (3 \, x^{2} + 2\right ) \]
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Time = 0.04 (sec) , antiderivative size = 27, normalized size of antiderivative = 0.90 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=\frac {\log {\left (x^{2} + \frac {2}{3} \right )}}{3} - \frac {5 \sqrt {6} \operatorname {atan}{\left (\frac {\sqrt {6} x}{2} \right )}}{6} \]
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Time = 0.29 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.77 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=-\frac {5}{6} \, \sqrt {6} \arctan \left (\frac {1}{2} \, \sqrt {6} x\right ) + \frac {1}{3} \, \log \left (3 \, x^{2} + 2\right ) \]
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Time = 0.28 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.70 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=-\frac {5}{6} \, \sqrt {6} \arctan \left (\frac {1}{2} \, \sqrt {6} x\right ) + \frac {1}{3} \, \log \left (x^{2} + \frac {2}{3}\right ) \]
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Time = 0.04 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.70 \[ \int \frac {-5+2 x}{2+3 x^2} \, dx=\frac {\ln \left (x^2+\frac {2}{3}\right )}{3}-\frac {5\,\sqrt {6}\,\mathrm {atan}\left (\frac {\sqrt {6}\,x}{2}\right )}{6} \]
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