Integrand size = 16, antiderivative size = 150 \[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=\frac {\sqrt {-3-\left (1-\sqrt {7}\right ) x^2} \sqrt {\frac {3+\left (1+\sqrt {7}\right ) x^2}{3+\left (1-\sqrt {7}\right ) x^2}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\sqrt {2} \sqrt [4]{7} x}{\sqrt {-3-\left (1-\sqrt {7}\right ) x^2}}\right ),\frac {1}{14} \left (7-\sqrt {7}\right )\right )}{\sqrt {6} \sqrt [4]{7} \sqrt {\frac {1}{3+\left (1-\sqrt {7}\right ) x^2}} \sqrt {-3-2 x^2+2 x^4}} \]
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Time = 0.02 (sec) , antiderivative size = 150, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.062, Rules used = {1112} \[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=\frac {\sqrt {-\left (\left (1-\sqrt {7}\right ) x^2\right )-3} \sqrt {\frac {\left (1+\sqrt {7}\right ) x^2+3}{\left (1-\sqrt {7}\right ) x^2+3}} \operatorname {EllipticF}\left (\arcsin \left (\frac {\sqrt {2} \sqrt [4]{7} x}{\sqrt {-\left (\left (1-\sqrt {7}\right ) x^2\right )-3}}\right ),\frac {1}{14} \left (7-\sqrt {7}\right )\right )}{\sqrt {6} \sqrt [4]{7} \sqrt {\frac {1}{\left (1-\sqrt {7}\right ) x^2+3}} \sqrt {2 x^4-2 x^2-3}} \]
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Rule 1112
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {-3-\left (1-\sqrt {7}\right ) x^2} \sqrt {\frac {3+\left (1+\sqrt {7}\right ) x^2}{3+\left (1-\sqrt {7}\right ) x^2}} F\left (\sin ^{-1}\left (\frac {\sqrt {2} \sqrt [4]{7} x}{\sqrt {-3-\left (1-\sqrt {7}\right ) x^2}}\right )|\frac {1}{14} \left (7-\sqrt {7}\right )\right )}{\sqrt {6} \sqrt [4]{7} \sqrt {\frac {1}{3+\left (1-\sqrt {7}\right ) x^2}} \sqrt {-3-2 x^2+2 x^4}} \\ \end{align*}
Result contains complex when optimal does not.
Time = 10.04 (sec) , antiderivative size = 81, normalized size of antiderivative = 0.54 \[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=-\frac {i \sqrt {3+2 x^2-2 x^4} \operatorname {EllipticF}\left (i \text {arcsinh}\left (\sqrt {\frac {2}{-1+\sqrt {7}}} x\right ),\frac {1}{3} \left (-4+\sqrt {7}\right )\right )}{\sqrt {1+\sqrt {7}} \sqrt {-3-2 x^2+2 x^4}} \]
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Result contains complex when optimal does not.
Time = 0.57 (sec) , antiderivative size = 84, normalized size of antiderivative = 0.56
method | result | size |
default | \(\frac {3 \sqrt {1-\left (-\frac {1}{3}-\frac {\sqrt {7}}{3}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{3}+\frac {\sqrt {7}}{3}\right ) x^{2}}\, F\left (\frac {\sqrt {-3-3 \sqrt {7}}\, x}{3}, \frac {i \sqrt {42}}{6}-\frac {i \sqrt {6}}{6}\right )}{\sqrt {-3-3 \sqrt {7}}\, \sqrt {2 x^{4}-2 x^{2}-3}}\) | \(84\) |
elliptic | \(\frac {3 \sqrt {1-\left (-\frac {1}{3}-\frac {\sqrt {7}}{3}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{3}+\frac {\sqrt {7}}{3}\right ) x^{2}}\, F\left (\frac {\sqrt {-3-3 \sqrt {7}}\, x}{3}, \frac {i \sqrt {42}}{6}-\frac {i \sqrt {6}}{6}\right )}{\sqrt {-3-3 \sqrt {7}}\, \sqrt {2 x^{4}-2 x^{2}-3}}\) | \(84\) |
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none
Time = 0.07 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.33 \[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=-\frac {1}{18} \, {\left (\sqrt {7} \sqrt {3} \sqrt {-3} + \sqrt {3} \sqrt {-3}\right )} \sqrt {\sqrt {7} - 1} F(\arcsin \left (\frac {1}{3} \, \sqrt {3} x \sqrt {\sqrt {7} - 1}\right )\,|\,-\frac {1}{3} \, \sqrt {7} - \frac {4}{3}) \]
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\[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=\int \frac {1}{\sqrt {2 x^{4} - 2 x^{2} - 3}}\, dx \]
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\[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=\int { \frac {1}{\sqrt {2 \, x^{4} - 2 \, x^{2} - 3}} \,d x } \]
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\[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=\int { \frac {1}{\sqrt {2 \, x^{4} - 2 \, x^{2} - 3}} \,d x } \]
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Timed out. \[ \int \frac {1}{\sqrt {-3-2 x^2+2 x^4}} \, dx=\int \frac {1}{\sqrt {2\,x^4-2\,x^2-3}} \,d x \]
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