Integrand size = 13, antiderivative size = 31 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=-\frac {1}{4 x^2}-\frac {1}{4} \sqrt {\frac {3}{2}} \arctan \left (\sqrt {\frac {3}{2}} x^2\right ) \]
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Time = 0.01 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.231, Rules used = {281, 331, 209} \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=-\frac {1}{4} \sqrt {\frac {3}{2}} \arctan \left (\sqrt {\frac {3}{2}} x^2\right )-\frac {1}{4 x^2} \]
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Rule 209
Rule 281
Rule 331
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{x^2 \left (2+3 x^2\right )} \, dx,x,x^2\right ) \\ & = -\frac {1}{4 x^2}-\frac {3}{4} \text {Subst}\left (\int \frac {1}{2+3 x^2} \, dx,x,x^2\right ) \\ & = -\frac {1}{4 x^2}-\frac {1}{4} \sqrt {\frac {3}{2}} \tan ^{-1}\left (\sqrt {\frac {3}{2}} x^2\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 48, normalized size of antiderivative = 1.55 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=\frac {-2+\sqrt {6} x^2 \arctan \left (1-\sqrt [4]{6} x\right )+\sqrt {6} x^2 \arctan \left (1+\sqrt [4]{6} x\right )}{8 x^2} \]
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Time = 3.94 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.68
method | result | size |
default | \(-\frac {1}{4 x^{2}}-\frac {\arctan \left (\frac {x^{2} \sqrt {6}}{2}\right ) \sqrt {6}}{8}\) | \(21\) |
risch | \(-\frac {1}{4 x^{2}}-\frac {\arctan \left (\frac {x^{2} \sqrt {6}}{2}\right ) \sqrt {6}}{8}\) | \(21\) |
meijerg | \(\frac {\sqrt {3}\, \sqrt {2}\, \left (-\frac {2 \sqrt {3}\, \sqrt {2}}{3 x^{2}}-2 \arctan \left (\frac {\sqrt {2}\, \sqrt {3}\, x^{2}}{2}\right )\right )}{16}\) | \(35\) |
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Time = 0.28 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.94 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=-\frac {\sqrt {3} \sqrt {2} x^{2} \arctan \left (\frac {1}{2} \, \sqrt {3} \sqrt {2} x^{2}\right ) + 2}{8 \, x^{2}} \]
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Time = 0.06 (sec) , antiderivative size = 26, normalized size of antiderivative = 0.84 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=- \frac {\sqrt {6} \operatorname {atan}{\left (\frac {\sqrt {6} x^{2}}{2} \right )}}{8} - \frac {1}{4 x^{2}} \]
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Time = 0.29 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=-\frac {1}{8} \, \sqrt {6} \arctan \left (\frac {1}{2} \, \sqrt {6} x^{2}\right ) - \frac {1}{4 \, x^{2}} \]
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Time = 0.34 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=-\frac {1}{8} \, \sqrt {6} \arctan \left (\frac {1}{2} \, \sqrt {6} x^{2}\right ) - \frac {1}{4 \, x^{2}} \]
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Time = 5.49 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.65 \[ \int \frac {1}{x^3 \left (2+3 x^4\right )} \, dx=-\frac {\sqrt {6}\,\mathrm {atan}\left (\frac {\sqrt {6}\,x^2}{2}\right )}{8}-\frac {1}{4\,x^2} \]
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