Integrand size = 24, antiderivative size = 61 \[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=\frac {\arctan \left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-1-3 x^2}}\right )}{3 \sqrt {6}}-\frac {\text {arctanh}\left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-1-3 x^2}}\right )}{3 \sqrt {6}} \]
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Time = 0.01 (sec) , antiderivative size = 61, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.042, Rules used = {453} \[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=\frac {\arctan \left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-3 x^2-1}}\right )}{3 \sqrt {6}}-\frac {\text {arctanh}\left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-3 x^2-1}}\right )}{3 \sqrt {6}} \]
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Rule 453
Rubi steps \begin{align*} \text {integral}& = \frac {\tan ^{-1}\left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-1-3 x^2}}\right )}{3 \sqrt {6}}-\frac {\tanh ^{-1}\left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-1-3 x^2}}\right )}{3 \sqrt {6}} \\ \end{align*}
Time = 1.62 (sec) , antiderivative size = 54, normalized size of antiderivative = 0.89 \[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=-\frac {-\arctan \left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-1-3 x^2}}\right )+\text {arctanh}\left (\frac {\sqrt {\frac {3}{2}} x}{\sqrt [4]{-1-3 x^2}}\right )}{3 \sqrt {6}} \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 3.29 (sec) , antiderivative size = 138, normalized size of antiderivative = 2.26
method | result | size |
trager | \(-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}-6\right ) \ln \left (\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}-6\right ) \left (-3 x^{2}-1\right )^{\frac {3}{4}}+3 \sqrt {-3 x^{2}-1}\, x -\operatorname {RootOf}\left (\textit {\_Z}^{2}-6\right ) \left (-3 x^{2}-1\right )^{\frac {1}{4}}-3 x}{3 x^{2}+2}\right )}{18}-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+6\right ) \ln \left (-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+6\right ) \left (-3 x^{2}-1\right )^{\frac {3}{4}}-3 \sqrt {-3 x^{2}-1}\, x +\operatorname {RootOf}\left (\textit {\_Z}^{2}+6\right ) \left (-3 x^{2}-1\right )^{\frac {1}{4}}-3 x}{3 x^{2}+2}\right )}{18}\) | \(138\) |
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Result contains complex when optimal does not.
Time = 0.26 (sec) , antiderivative size = 115, normalized size of antiderivative = 1.89 \[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=-\frac {1}{36} \, \sqrt {6} \log \left (\frac {\sqrt {6} x + 2 \, {\left (-3 \, x^{2} - 1\right )}^{\frac {1}{4}}}{2 \, x}\right ) + \frac {1}{36} \, \sqrt {6} \log \left (-\frac {\sqrt {6} x - 2 \, {\left (-3 \, x^{2} - 1\right )}^{\frac {1}{4}}}{2 \, x}\right ) - \frac {1}{36} i \, \sqrt {6} \log \left (\frac {i \, \sqrt {6} x + 2 \, {\left (-3 \, x^{2} - 1\right )}^{\frac {1}{4}}}{2 \, x}\right ) + \frac {1}{36} i \, \sqrt {6} \log \left (\frac {-i \, \sqrt {6} x + 2 \, {\left (-3 \, x^{2} - 1\right )}^{\frac {1}{4}}}{2 \, x}\right ) \]
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\[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=- \int \frac {x^{2}}{3 x^{2} \left (- 3 x^{2} - 1\right )^{\frac {3}{4}} + 2 \left (- 3 x^{2} - 1\right )^{\frac {3}{4}}}\, dx \]
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\[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=\int { -\frac {x^{2}}{{\left (3 \, x^{2} + 2\right )} {\left (-3 \, x^{2} - 1\right )}^{\frac {3}{4}}} \,d x } \]
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\[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=\int { -\frac {x^{2}}{{\left (3 \, x^{2} + 2\right )} {\left (-3 \, x^{2} - 1\right )}^{\frac {3}{4}}} \,d x } \]
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Timed out. \[ \int \frac {x^2}{\left (-2-3 x^2\right ) \left (-1-3 x^2\right )^{3/4}} \, dx=-\int \frac {x^2}{{\left (-3\,x^2-1\right )}^{3/4}\,\left (3\,x^2+2\right )} \,d x \]
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