Integrand size = 24, antiderivative size = 48 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2}{27} \left (-1+3 x^2\right )^{3/4}+\frac {2}{9} \arctan \left (\sqrt [4]{-1+3 x^2}\right )-\frac {2}{9} \text {arctanh}\left (\sqrt [4]{-1+3 x^2}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 48, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {457, 81, 65, 304, 209, 212} \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2}{9} \arctan \left (\sqrt [4]{3 x^2-1}\right )-\frac {2}{9} \text {arctanh}\left (\sqrt [4]{3 x^2-1}\right )+\frac {2}{27} \left (3 x^2-1\right )^{3/4} \]
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Rule 65
Rule 81
Rule 209
Rule 212
Rule 304
Rule 457
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {x}{(-2+3 x) \sqrt [4]{-1+3 x}} \, dx,x,x^2\right ) \\ & = \frac {2}{27} \left (-1+3 x^2\right )^{3/4}+\frac {1}{3} \text {Subst}\left (\int \frac {1}{(-2+3 x) \sqrt [4]{-1+3 x}} \, dx,x,x^2\right ) \\ & = \frac {2}{27} \left (-1+3 x^2\right )^{3/4}+\frac {4}{9} \text {Subst}\left (\int \frac {x^2}{-1+x^4} \, dx,x,\sqrt [4]{-1+3 x^2}\right ) \\ & = \frac {2}{27} \left (-1+3 x^2\right )^{3/4}-\frac {2}{9} \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\sqrt [4]{-1+3 x^2}\right )+\frac {2}{9} \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\sqrt [4]{-1+3 x^2}\right ) \\ & = \frac {2}{27} \left (-1+3 x^2\right )^{3/4}+\frac {2}{9} \tan ^{-1}\left (\sqrt [4]{-1+3 x^2}\right )-\frac {2}{9} \tanh ^{-1}\left (\sqrt [4]{-1+3 x^2}\right ) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.92 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2}{27} \left (\left (-1+3 x^2\right )^{3/4}+3 \arctan \left (\sqrt [4]{-1+3 x^2}\right )-3 \text {arctanh}\left (\sqrt [4]{-1+3 x^2}\right )\right ) \]
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Time = 3.88 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.10
method | result | size |
pseudoelliptic | \(\frac {2 \left (3 x^{2}-1\right )^{\frac {3}{4}}}{27}+\frac {\ln \left (-1+\left (3 x^{2}-1\right )^{\frac {1}{4}}\right )}{9}-\frac {\ln \left (1+\left (3 x^{2}-1\right )^{\frac {1}{4}}\right )}{9}+\frac {2 \arctan \left (\left (3 x^{2}-1\right )^{\frac {1}{4}}\right )}{9}\) | \(53\) |
trager | \(\frac {2 \left (3 x^{2}-1\right )^{\frac {3}{4}}}{27}-\frac {\ln \left (-\frac {2 \left (3 x^{2}-1\right )^{\frac {3}{4}}+2 \sqrt {3 x^{2}-1}+3 x^{2}+2 \left (3 x^{2}-1\right )^{\frac {1}{4}}}{3 x^{2}-2}\right )}{9}-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (\frac {2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \left (3 x^{2}-1\right )^{\frac {3}{4}}-2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \left (3 x^{2}-1\right )^{\frac {1}{4}}+2 \sqrt {3 x^{2}-1}-3 x^{2}}{3 x^{2}-2}\right )}{9}\) | \(136\) |
risch | \(\frac {2 \left (3 x^{2}-1\right )^{\frac {3}{4}}}{27}+\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (-\frac {2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \left (3 x^{2}-1\right )^{\frac {3}{4}}-2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \left (3 x^{2}-1\right )^{\frac {1}{4}}-2 \sqrt {3 x^{2}-1}+3 x^{2}}{3 x^{2}-2}\right )}{9}-\frac {\ln \left (-\frac {2 \left (3 x^{2}-1\right )^{\frac {3}{4}}+2 \sqrt {3 x^{2}-1}+3 x^{2}+2 \left (3 x^{2}-1\right )^{\frac {1}{4}}}{3 x^{2}-2}\right )}{9}\) | \(137\) |
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Time = 0.28 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.08 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2}{27} \, {\left (3 \, x^{2} - 1\right )}^{\frac {3}{4}} + \frac {2}{9} \, \arctan \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}}\right ) - \frac {1}{9} \, \log \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}} + 1\right ) + \frac {1}{9} \, \log \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Time = 4.05 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.21 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2 \left (3 x^{2} - 1\right )^{\frac {3}{4}}}{27} + \frac {\log {\left (\sqrt [4]{3 x^{2} - 1} - 1 \right )}}{9} - \frac {\log {\left (\sqrt [4]{3 x^{2} - 1} + 1 \right )}}{9} + \frac {2 \operatorname {atan}{\left (\sqrt [4]{3 x^{2} - 1} \right )}}{9} \]
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Time = 0.28 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.08 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2}{27} \, {\left (3 \, x^{2} - 1\right )}^{\frac {3}{4}} + \frac {2}{9} \, \arctan \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}}\right ) - \frac {1}{9} \, \log \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}} + 1\right ) + \frac {1}{9} \, \log \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Time = 0.38 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.10 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2}{27} \, {\left (3 \, x^{2} - 1\right )}^{\frac {3}{4}} + \frac {2}{9} \, \arctan \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}}\right ) - \frac {1}{9} \, \log \left ({\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}} + 1\right ) + \frac {1}{9} \, \log \left ({\left | {\left (3 \, x^{2} - 1\right )}^{\frac {1}{4}} - 1 \right |}\right ) \]
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Time = 5.39 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.75 \[ \int \frac {x^3}{\left (-2+3 x^2\right ) \sqrt [4]{-1+3 x^2}} \, dx=\frac {2\,\mathrm {atan}\left ({\left (3\,x^2-1\right )}^{1/4}\right )}{9}-\frac {2\,\mathrm {atanh}\left ({\left (3\,x^2-1\right )}^{1/4}\right )}{9}+\frac {2\,{\left (3\,x^2-1\right )}^{3/4}}{27} \]
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