Integrand size = 20, antiderivative size = 164 \[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\frac {2 x \sqrt {1+x^2+x^4}}{3 \left (1+x^2\right )}+\frac {2}{21} x \left (4+3 x^2\right ) \sqrt {1+x^2+x^4}+\frac {1}{7} x \left (1+x^2+x^4\right )^{3/2}-\frac {2 \left (1+x^2\right ) \sqrt {\frac {1+x^2+x^4}{\left (1+x^2\right )^2}} E\left (2 \arctan (x)\left |\frac {1}{4}\right .\right )}{3 \sqrt {1+x^2+x^4}}+\frac {4 \left (1+x^2\right ) \sqrt {\frac {1+x^2+x^4}{\left (1+x^2\right )^2}} \operatorname {EllipticF}\left (2 \arctan (x),\frac {1}{4}\right )}{7 \sqrt {1+x^2+x^4}} \]
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Time = 0.04 (sec) , antiderivative size = 164, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {1220, 1190, 1211, 1117, 1209} \[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\frac {4 \left (x^2+1\right ) \sqrt {\frac {x^4+x^2+1}{\left (x^2+1\right )^2}} \operatorname {EllipticF}\left (2 \arctan (x),\frac {1}{4}\right )}{7 \sqrt {x^4+x^2+1}}-\frac {2 \left (x^2+1\right ) \sqrt {\frac {x^4+x^2+1}{\left (x^2+1\right )^2}} E\left (2 \arctan (x)\left |\frac {1}{4}\right .\right )}{3 \sqrt {x^4+x^2+1}}+\frac {1}{7} x \left (x^4+x^2+1\right )^{3/2}+\frac {2}{21} x \left (3 x^2+4\right ) \sqrt {x^4+x^2+1}+\frac {2 x \sqrt {x^4+x^2+1}}{3 \left (x^2+1\right )} \]
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Rule 1117
Rule 1190
Rule 1209
Rule 1211
Rule 1220
Rubi steps \begin{align*} \text {integral}& = \frac {1}{7} x \left (1+x^2+x^4\right )^{3/2}+\frac {1}{7} \int \left (6+10 x^2\right ) \sqrt {1+x^2+x^4} \, dx \\ & = \frac {2}{21} x \left (4+3 x^2\right ) \sqrt {1+x^2+x^4}+\frac {1}{7} x \left (1+x^2+x^4\right )^{3/2}+\frac {1}{105} \int \frac {50+70 x^2}{\sqrt {1+x^2+x^4}} \, dx \\ & = \frac {2}{21} x \left (4+3 x^2\right ) \sqrt {1+x^2+x^4}+\frac {1}{7} x \left (1+x^2+x^4\right )^{3/2}-\frac {2}{3} \int \frac {1-x^2}{\sqrt {1+x^2+x^4}} \, dx+\frac {8}{7} \int \frac {1}{\sqrt {1+x^2+x^4}} \, dx \\ & = \frac {2 x \sqrt {1+x^2+x^4}}{3 \left (1+x^2\right )}+\frac {2}{21} x \left (4+3 x^2\right ) \sqrt {1+x^2+x^4}+\frac {1}{7} x \left (1+x^2+x^4\right )^{3/2}-\frac {2 \left (1+x^2\right ) \sqrt {\frac {1+x^2+x^4}{\left (1+x^2\right )^2}} E\left (2 \tan ^{-1}(x)|\frac {1}{4}\right )}{3 \sqrt {1+x^2+x^4}}+\frac {4 \left (1+x^2\right ) \sqrt {\frac {1+x^2+x^4}{\left (1+x^2\right )^2}} F\left (2 \tan ^{-1}(x)|\frac {1}{4}\right )}{7 \sqrt {1+x^2+x^4}} \\ \end{align*}
Result contains complex when optimal does not.
Time = 4.61 (sec) , antiderivative size = 162, normalized size of antiderivative = 0.99 \[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\frac {x \left (11+20 x^2+23 x^4+12 x^6+3 x^8\right )+14 \sqrt [3]{-1} \sqrt {1+\sqrt [3]{-1} x^2} \sqrt {1-(-1)^{2/3} x^2} E\left (i \text {arcsinh}\left ((-1)^{5/6} x\right )|(-1)^{2/3}\right )+2 \sqrt [3]{-1} \left (-7+5 \sqrt [3]{-1}\right ) \sqrt {1+\sqrt [3]{-1} x^2} \sqrt {1-(-1)^{2/3} x^2} \operatorname {EllipticF}\left (i \text {arcsinh}\left ((-1)^{5/6} x\right ),(-1)^{2/3}\right )}{21 \sqrt {1+x^2+x^4}} \]
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Result contains complex when optimal does not.
Time = 0.49 (sec) , antiderivative size = 230, normalized size of antiderivative = 1.40
method | result | size |
risch | \(\frac {x \left (3 x^{4}+9 x^{2}+11\right ) \sqrt {x^{4}+x^{2}+1}}{21}+\frac {20 \sqrt {1-\left (-\frac {1}{2}+\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{2}-\frac {i \sqrt {3}}{2}\right ) x^{2}}\, F\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )}{21 \sqrt {-2+2 i \sqrt {3}}\, \sqrt {x^{4}+x^{2}+1}}-\frac {8 \sqrt {1-\left (-\frac {1}{2}+\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{2}-\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \left (F\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )-E\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )\right )}{3 \sqrt {-2+2 i \sqrt {3}}\, \sqrt {x^{4}+x^{2}+1}\, \left (1+i \sqrt {3}\right )}\) | \(230\) |
default | \(\frac {11 x \sqrt {x^{4}+x^{2}+1}}{21}+\frac {20 \sqrt {1-\left (-\frac {1}{2}+\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{2}-\frac {i \sqrt {3}}{2}\right ) x^{2}}\, F\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )}{21 \sqrt {-2+2 i \sqrt {3}}\, \sqrt {x^{4}+x^{2}+1}}-\frac {8 \sqrt {1-\left (-\frac {1}{2}+\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{2}-\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \left (F\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )-E\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )\right )}{3 \sqrt {-2+2 i \sqrt {3}}\, \sqrt {x^{4}+x^{2}+1}\, \left (1+i \sqrt {3}\right )}+\frac {x^{5} \sqrt {x^{4}+x^{2}+1}}{7}+\frac {3 x^{3} \sqrt {x^{4}+x^{2}+1}}{7}\) | \(248\) |
elliptic | \(\frac {11 x \sqrt {x^{4}+x^{2}+1}}{21}+\frac {20 \sqrt {1-\left (-\frac {1}{2}+\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{2}-\frac {i \sqrt {3}}{2}\right ) x^{2}}\, F\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )}{21 \sqrt {-2+2 i \sqrt {3}}\, \sqrt {x^{4}+x^{2}+1}}-\frac {8 \sqrt {1-\left (-\frac {1}{2}+\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \sqrt {1-\left (-\frac {1}{2}-\frac {i \sqrt {3}}{2}\right ) x^{2}}\, \left (F\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )-E\left (\frac {x \sqrt {-2+2 i \sqrt {3}}}{2}, \frac {\sqrt {-2+2 i \sqrt {3}}}{2}\right )\right )}{3 \sqrt {-2+2 i \sqrt {3}}\, \sqrt {x^{4}+x^{2}+1}\, \left (1+i \sqrt {3}\right )}+\frac {x^{5} \sqrt {x^{4}+x^{2}+1}}{7}+\frac {3 x^{3} \sqrt {x^{4}+x^{2}+1}}{7}\) | \(248\) |
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Time = 0.08 (sec) , antiderivative size = 125, normalized size of antiderivative = 0.76 \[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\frac {7 \, \sqrt {2} {\left (\sqrt {-3} x - x\right )} \sqrt {\sqrt {-3} - 1} E(\arcsin \left (\frac {\sqrt {2} \sqrt {\sqrt {-3} - 1}}{2 \, x}\right )\,|\,\frac {1}{2} \, \sqrt {-3} - \frac {1}{2}) - 2 \, \sqrt {2} {\left (\sqrt {-3} x - 6 \, x\right )} \sqrt {\sqrt {-3} - 1} F(\arcsin \left (\frac {\sqrt {2} \sqrt {\sqrt {-3} - 1}}{2 \, x}\right )\,|\,\frac {1}{2} \, \sqrt {-3} - \frac {1}{2}) + 2 \, {\left (3 \, x^{6} + 9 \, x^{4} + 11 \, x^{2} + 14\right )} \sqrt {x^{4} + x^{2} + 1}}{42 \, x} \]
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\[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\int \sqrt {\left (x^{2} - x + 1\right ) \left (x^{2} + x + 1\right )} \left (x^{2} + 1\right )^{2}\, dx \]
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\[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\int { \sqrt {x^{4} + x^{2} + 1} {\left (x^{2} + 1\right )}^{2} \,d x } \]
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\[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\int { \sqrt {x^{4} + x^{2} + 1} {\left (x^{2} + 1\right )}^{2} \,d x } \]
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Timed out. \[ \int \left (1+x^2\right )^2 \sqrt {1+x^2+x^4} \, dx=\int {\left (x^2+1\right )}^2\,\sqrt {x^4+x^2+1} \,d x \]
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