Integrand size = 61, antiderivative size = 163 \[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=-\sqrt {\frac {1}{10} \left (1+\sqrt {5}\right )} \arctan \left (\frac {\sqrt {-\frac {1}{2}+\frac {\sqrt {5}}{2}} x \sqrt {1+2 x^2-x^4}}{-1-2 x^2+x^4}\right )-\text {arctanh}\left (\frac {x \sqrt {1+2 x^2-x^4}}{-1-2 x^2+x^4}\right )+\sqrt {\frac {1}{10} \left (-1+\sqrt {5}\right )} \text {arctanh}\left (\frac {\sqrt {\frac {1}{2}+\frac {\sqrt {5}}{2}} x \sqrt {1+2 x^2-x^4}}{-1-2 x^2+x^4}\right ) \]
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\[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=\int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {\left (1-2 x^2\right ) \sqrt {1+2 x^2-x^4}}{-1-x^2+x^4}+\frac {\sqrt {1+2 x^2-x^4} \left (2-x^2-4 x^4+2 x^6\right )}{1+3 x^2-x^4-3 x^6+x^8}\right ) \, dx \\ & = \int \frac {\left (1-2 x^2\right ) \sqrt {1+2 x^2-x^4}}{-1-x^2+x^4} \, dx+\int \frac {\sqrt {1+2 x^2-x^4} \left (2-x^2-4 x^4+2 x^6\right )}{1+3 x^2-x^4-3 x^6+x^8} \, dx \\ & = \int \left (-\frac {2 \sqrt {1+2 x^2-x^4}}{-1-\sqrt {5}+2 x^2}-\frac {2 \sqrt {1+2 x^2-x^4}}{-1+\sqrt {5}+2 x^2}\right ) \, dx+\int \left (\frac {2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8}-\frac {x^2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8}-\frac {4 x^4 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8}+\frac {2 x^6 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8}\right ) \, dx \\ & = -\left (2 \int \frac {\sqrt {1+2 x^2-x^4}}{-1-\sqrt {5}+2 x^2} \, dx\right )-2 \int \frac {\sqrt {1+2 x^2-x^4}}{-1+\sqrt {5}+2 x^2} \, dx+2 \int \frac {\sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx+2 \int \frac {x^6 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-4 \int \frac {x^4 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-\int \frac {x^2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx \\ & = \frac {1}{2} \int \frac {-3-\sqrt {5}+2 x^2}{\sqrt {1+2 x^2-x^4}} \, dx+\frac {1}{2} \int \frac {-3+\sqrt {5}+2 x^2}{\sqrt {1+2 x^2-x^4}} \, dx+2 \int \frac {\sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx+2 \int \frac {x^6 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-4 \int \frac {x^4 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-\left (1-\sqrt {5}\right ) \int \frac {1}{\left (-1+\sqrt {5}+2 x^2\right ) \sqrt {1+2 x^2-x^4}} \, dx-\left (1+\sqrt {5}\right ) \int \frac {1}{\left (-1-\sqrt {5}+2 x^2\right ) \sqrt {1+2 x^2-x^4}} \, dx-\int \frac {x^2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx \\ & = 2 \int \frac {\sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx+2 \int \frac {x^6 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-4 \int \frac {x^4 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-\left (2 \left (1-\sqrt {5}\right )\right ) \int \frac {1}{\sqrt {2+2 \sqrt {2}-2 x^2} \sqrt {-2+2 \sqrt {2}+2 x^2} \left (-1+\sqrt {5}+2 x^2\right )} \, dx-\left (2 \left (1+\sqrt {5}\right )\right ) \int \frac {1}{\sqrt {2+2 \sqrt {2}-2 x^2} \sqrt {-2+2 \sqrt {2}+2 x^2} \left (-1-\sqrt {5}+2 x^2\right )} \, dx+\int \frac {-3-\sqrt {5}+2 x^2}{\sqrt {2+2 \sqrt {2}-2 x^2} \sqrt {-2+2 \sqrt {2}+2 x^2}} \, dx+\int \frac {-3+\sqrt {5}+2 x^2}{\sqrt {2+2 \sqrt {2}-2 x^2} \sqrt {-2+2 \sqrt {2}+2 x^2}} \, dx-\int \frac {x^2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx \\ & = \frac {\operatorname {EllipticPi}\left (\frac {2 \left (1+\sqrt {2}\right )}{1-\sqrt {5}},\arcsin \left (\sqrt {-1+\sqrt {2}} x\right ),-3-2 \sqrt {2}\right )}{\sqrt {-1+\sqrt {2}}}+\frac {\operatorname {EllipticPi}\left (\frac {2 \left (1+\sqrt {2}\right )}{1+\sqrt {5}},\arcsin \left (\sqrt {-1+\sqrt {2}} x\right ),-3-2 \sqrt {2}\right )}{\sqrt {-1+\sqrt {2}}}+2 \int \frac {\sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx+2 \int \frac {x^6 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-4 \int \frac {x^4 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx+\left (-1-2 \sqrt {2}-\sqrt {5}\right ) \int \frac {1}{\sqrt {2+2 \sqrt {2}-2 x^2} \sqrt {-2+2 \sqrt {2}+2 x^2}} \, dx+\left (-1-2 \sqrt {2}+\sqrt {5}\right ) \int \frac {1}{\sqrt {2+2 \sqrt {2}-2 x^2} \sqrt {-2+2 \sqrt {2}+2 x^2}} \, dx+2 \int \frac {\sqrt {-2+2 \sqrt {2}+2 x^2}}{\sqrt {2+2 \sqrt {2}-2 x^2}} \, dx-\int \frac {x^2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx \\ & = \frac {2 E\left (\arcsin \left (\sqrt {-1+\sqrt {2}} x\right )|-3-2 \sqrt {2}\right )}{\sqrt {1+\sqrt {2}}}-\frac {\left (1+2 \sqrt {2}-\sqrt {5}\right ) \operatorname {EllipticF}\left (\arcsin \left (\sqrt {-1+\sqrt {2}} x\right ),-3-2 \sqrt {2}\right )}{2 \sqrt {-1+\sqrt {2}}}-\frac {\left (1+2 \sqrt {2}+\sqrt {5}\right ) \operatorname {EllipticF}\left (\arcsin \left (\sqrt {-1+\sqrt {2}} x\right ),-3-2 \sqrt {2}\right )}{2 \sqrt {-1+\sqrt {2}}}+\frac {\operatorname {EllipticPi}\left (\frac {2 \left (1+\sqrt {2}\right )}{1-\sqrt {5}},\arcsin \left (\sqrt {-1+\sqrt {2}} x\right ),-3-2 \sqrt {2}\right )}{\sqrt {-1+\sqrt {2}}}+\frac {\operatorname {EllipticPi}\left (\frac {2 \left (1+\sqrt {2}\right )}{1+\sqrt {5}},\arcsin \left (\sqrt {-1+\sqrt {2}} x\right ),-3-2 \sqrt {2}\right )}{\sqrt {-1+\sqrt {2}}}+2 \int \frac {\sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx+2 \int \frac {x^6 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-4 \int \frac {x^4 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx-\int \frac {x^2 \sqrt {1+2 x^2-x^4}}{1+3 x^2-x^4-3 x^6+x^8} \, dx \\ \end{align*}
Time = 0.75 (sec) , antiderivative size = 113, normalized size of antiderivative = 0.69 \[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=\sqrt {\frac {1}{10} \left (1+\sqrt {5}\right )} \arctan \left (\frac {\sqrt {-1+\sqrt {5}} x}{\sqrt {2+4 x^2-2 x^4}}\right )-\sqrt {\frac {1}{10} \left (-1+\sqrt {5}\right )} \text {arctanh}\left (\frac {\sqrt {1+\sqrt {5}} x}{\sqrt {2+4 x^2-2 x^4}}\right )+\text {arctanh}\left (\frac {x}{\sqrt {1+2 x^2-x^4}}\right ) \]
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Time = 10.34 (sec) , antiderivative size = 112, normalized size of antiderivative = 0.69
method | result | size |
elliptic | \(\frac {\left (-\frac {2 \sqrt {5}\, \arctan \left (\frac {\sqrt {-x^{4}+2 x^{2}+1}\, \sqrt {2}}{x \sqrt {\sqrt {5}-1}}\right )}{5 \sqrt {\sqrt {5}-1}}-\frac {2 \sqrt {5}\, \operatorname {arctanh}\left (\frac {\sqrt {-x^{4}+2 x^{2}+1}\, \sqrt {2}}{x \sqrt {\sqrt {5}+1}}\right )}{5 \sqrt {\sqrt {5}+1}}+\sqrt {2}\, \operatorname {arctanh}\left (\frac {\sqrt {-x^{4}+2 x^{2}+1}}{x}\right )\right ) \sqrt {2}}{2}\) | \(112\) |
default | \(\frac {\left (-\frac {1}{50}+\frac {i}{150}\right ) \left (\left (\left (-90-30 i\right ) \sqrt {2+2 i}\, \sqrt {-x^{4}+2 x^{2}+1}+\left (120+240 i\right ) x \right ) \operatorname {arctanh}\left (\frac {\sqrt {-x^{4}+2 x^{2}+1}}{x}\right )+\left (\arctan \left (\frac {-15 \sqrt {-x^{4}+2 x^{2}+1}\, \sqrt {2+2 i}\, x +3 \left (\left (-\frac {1}{3}+i\right ) x^{4}+\left (-2-\frac {2 i}{3}\right ) x^{2}+\frac {1}{3}-i\right ) \sqrt {5}+3 \left (-5+\frac {5 i}{3}\right ) x^{4}+20 x^{2}+15-5 i}{\sqrt {65+105 i+\left (15+55 i\right ) \sqrt {5}}\, \left (x^{2}+i\right )^{2}}\right ) \left (-1+3 i+\left (-3+i\right ) \sqrt {5}\right ) \sqrt {65+105 i+\left (-15-55 i\right ) \sqrt {5}}+120+240 i+\arctan \left (\frac {15 \sqrt {-x^{4}+2 x^{2}+1}\, \sqrt {2+2 i}\, x +3 \left (\left (-\frac {1}{3}+i\right ) x^{4}+\left (-2-\frac {2 i}{3}\right ) x^{2}+\frac {1}{3}-i\right ) \sqrt {5}+3 \left (5-\frac {5 i}{3}\right ) x^{4}-20 x^{2}-15+5 i}{\sqrt {65+105 i+\left (-15-55 i\right ) \sqrt {5}}\, \left (x^{2}+i\right )^{2}}\right ) \left (1-3 i+\left (-3+i\right ) \sqrt {5}\right ) \sqrt {65+105 i+\left (15+55 i\right ) \sqrt {5}}\right ) \left (\sqrt {2+2 i}\, x -\sqrt {-x^{4}+2 x^{2}+1}\right )\right ) x}{\left (i x^{2}-1-\sqrt {2+2 i}\, x +\sqrt {-x^{4}+2 x^{2}+1}\right ) \left (i x^{2}-1+\sqrt {2+2 i}\, x -\sqrt {-x^{4}+2 x^{2}+1}\right )}\) | \(368\) |
pseudoelliptic | \(\frac {\left (-\frac {1}{50}+\frac {i}{150}\right ) \left (\left (\left (-90-30 i\right ) \sqrt {2+2 i}\, \sqrt {-x^{4}+2 x^{2}+1}+\left (120+240 i\right ) x \right ) \operatorname {arctanh}\left (\frac {\sqrt {-x^{4}+2 x^{2}+1}}{x}\right )+\left (\arctan \left (\frac {-15 \sqrt {-x^{4}+2 x^{2}+1}\, \sqrt {2+2 i}\, x +3 \left (\left (-\frac {1}{3}+i\right ) x^{4}+\left (-2-\frac {2 i}{3}\right ) x^{2}+\frac {1}{3}-i\right ) \sqrt {5}+3 \left (-5+\frac {5 i}{3}\right ) x^{4}+20 x^{2}+15-5 i}{\sqrt {65+105 i+\left (15+55 i\right ) \sqrt {5}}\, \left (x^{2}+i\right )^{2}}\right ) \left (-1+3 i+\left (-3+i\right ) \sqrt {5}\right ) \sqrt {65+105 i+\left (-15-55 i\right ) \sqrt {5}}+120+240 i+\arctan \left (\frac {15 \sqrt {-x^{4}+2 x^{2}+1}\, \sqrt {2+2 i}\, x +3 \left (\left (-\frac {1}{3}+i\right ) x^{4}+\left (-2-\frac {2 i}{3}\right ) x^{2}+\frac {1}{3}-i\right ) \sqrt {5}+3 \left (5-\frac {5 i}{3}\right ) x^{4}-20 x^{2}-15+5 i}{\sqrt {65+105 i+\left (-15-55 i\right ) \sqrt {5}}\, \left (x^{2}+i\right )^{2}}\right ) \left (1-3 i+\left (-3+i\right ) \sqrt {5}\right ) \sqrt {65+105 i+\left (15+55 i\right ) \sqrt {5}}\right ) \left (\sqrt {2+2 i}\, x -\sqrt {-x^{4}+2 x^{2}+1}\right )\right ) x}{\left (i x^{2}-1-\sqrt {2+2 i}\, x +\sqrt {-x^{4}+2 x^{2}+1}\right ) \left (i x^{2}-1+\sqrt {2+2 i}\, x -\sqrt {-x^{4}+2 x^{2}+1}\right )}\) | \(368\) |
trager | \(-\frac {\ln \left (-\frac {x^{4}+2 \sqrt {-x^{4}+2 x^{2}+1}\, x -3 x^{2}-1}{x^{4}-x^{2}-1}\right )}{2}+\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right ) \ln \left (-\frac {1200 \operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right ) \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{4} x^{2}+60 \operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right ) \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2} x^{4}-140 \operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right ) \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2} x^{2}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right ) x^{4}+200 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2} \sqrt {-x^{4}+2 x^{2}+1}\, x -60 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2} \operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right )+2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right ) x^{2}-10 \sqrt {-x^{4}+2 x^{2}+1}\, x +\operatorname {RootOf}\left (\textit {\_Z}^{2}+100 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+5\right )}{20 x^{2} \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}-x^{4}+2 x^{2}+1}\right )}{10}+\operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right ) \ln \left (\frac {-600 x^{2} \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{5}+30 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{3} x^{4}-130 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{3} x^{2}+2 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right ) x^{4}+10 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2} \sqrt {-x^{4}+2 x^{2}+1}\, x -30 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{3}-6 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right ) x^{2}+\sqrt {-x^{4}+2 x^{2}+1}\, x -2 \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )}{20 x^{2} \operatorname {RootOf}\left (400 \textit {\_Z}^{4}+20 \textit {\_Z}^{2}-1\right )^{2}+x^{4}-x^{2}-1}\right )\) | \(631\) |
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Leaf count of result is larger than twice the leaf count of optimal. 627 vs. \(2 (132) = 264\).
Time = 0.40 (sec) , antiderivative size = 627, normalized size of antiderivative = 3.85 \[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=\frac {1}{40} \, \sqrt {10} \sqrt {\sqrt {5} - 1} \log \left (\frac {\sqrt {10} {\left (5 \, x^{8} - 35 \, x^{6} + 45 \, x^{4} + 35 \, x^{2} + \sqrt {5} {\left (3 \, x^{8} - 17 \, x^{6} + 19 \, x^{4} + 17 \, x^{2} + 3\right )} + 5\right )} \sqrt {\sqrt {5} - 1} + 20 \, {\left (3 \, x^{5} - 7 \, x^{3} + \sqrt {5} {\left (x^{5} - 3 \, x^{3} - x\right )} - 3 \, x\right )} \sqrt {-x^{4} + 2 \, x^{2} + 1}}{x^{8} - 3 \, x^{6} - x^{4} + 3 \, x^{2} + 1}\right ) - \frac {1}{40} \, \sqrt {10} \sqrt {\sqrt {5} - 1} \log \left (-\frac {\sqrt {10} {\left (5 \, x^{8} - 35 \, x^{6} + 45 \, x^{4} + 35 \, x^{2} + \sqrt {5} {\left (3 \, x^{8} - 17 \, x^{6} + 19 \, x^{4} + 17 \, x^{2} + 3\right )} + 5\right )} \sqrt {\sqrt {5} - 1} - 20 \, {\left (3 \, x^{5} - 7 \, x^{3} + \sqrt {5} {\left (x^{5} - 3 \, x^{3} - x\right )} - 3 \, x\right )} \sqrt {-x^{4} + 2 \, x^{2} + 1}}{x^{8} - 3 \, x^{6} - x^{4} + 3 \, x^{2} + 1}\right ) + \frac {1}{40} \, \sqrt {10} \sqrt {-\sqrt {5} - 1} \log \left (\frac {\sqrt {10} {\left (5 \, x^{8} - 35 \, x^{6} + 45 \, x^{4} + 35 \, x^{2} - \sqrt {5} {\left (3 \, x^{8} - 17 \, x^{6} + 19 \, x^{4} + 17 \, x^{2} + 3\right )} + 5\right )} \sqrt {-\sqrt {5} - 1} + 20 \, {\left (3 \, x^{5} - 7 \, x^{3} - \sqrt {5} {\left (x^{5} - 3 \, x^{3} - x\right )} - 3 \, x\right )} \sqrt {-x^{4} + 2 \, x^{2} + 1}}{x^{8} - 3 \, x^{6} - x^{4} + 3 \, x^{2} + 1}\right ) - \frac {1}{40} \, \sqrt {10} \sqrt {-\sqrt {5} - 1} \log \left (-\frac {\sqrt {10} {\left (5 \, x^{8} - 35 \, x^{6} + 45 \, x^{4} + 35 \, x^{2} - \sqrt {5} {\left (3 \, x^{8} - 17 \, x^{6} + 19 \, x^{4} + 17 \, x^{2} + 3\right )} + 5\right )} \sqrt {-\sqrt {5} - 1} - 20 \, {\left (3 \, x^{5} - 7 \, x^{3} - \sqrt {5} {\left (x^{5} - 3 \, x^{3} - x\right )} - 3 \, x\right )} \sqrt {-x^{4} + 2 \, x^{2} + 1}}{x^{8} - 3 \, x^{6} - x^{4} + 3 \, x^{2} + 1}\right ) + \frac {1}{2} \, \log \left (-\frac {x^{4} - 3 \, x^{2} - 2 \, \sqrt {-x^{4} + 2 \, x^{2} + 1} x - 1}{x^{4} - x^{2} - 1}\right ) \]
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Timed out. \[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=\text {Timed out} \]
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\[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=\int { \frac {{\left (x^{4} + 1\right )} {\left (x^{4} - 1\right )} \sqrt {-x^{4} + 2 \, x^{2} + 1}}{{\left (x^{8} - 3 \, x^{6} - x^{4} + 3 \, x^{2} + 1\right )} {\left (x^{4} - x^{2} - 1\right )}} \,d x } \]
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\[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=\int { \frac {{\left (x^{4} + 1\right )} {\left (x^{4} - 1\right )} \sqrt {-x^{4} + 2 \, x^{2} + 1}}{{\left (x^{8} - 3 \, x^{6} - x^{4} + 3 \, x^{2} + 1\right )} {\left (x^{4} - x^{2} - 1\right )}} \,d x } \]
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Timed out. \[ \int \frac {\sqrt {1+2 x^2-x^4} \left (-1+x^4\right ) \left (1+x^4\right )}{\left (-1-x^2+x^4\right ) \left (1+3 x^2-x^4-3 x^6+x^8\right )} \, dx=-\int \frac {\left (x^4-1\right )\,\left (x^4+1\right )\,\sqrt {-x^4+2\,x^2+1}}{\left (-x^4+x^2+1\right )\,\left (x^8-3\,x^6-x^4+3\,x^2+1\right )} \,d x \]
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