Integrand size = 12, antiderivative size = 67 \[ \int \frac {1}{1+4 x^2+x^4} \, dx=\frac {\arctan \left (\frac {x}{\sqrt {2-\sqrt {3}}}\right )}{2 \sqrt {3 \left (2-\sqrt {3}\right )}}-\frac {\arctan \left (\frac {x}{\sqrt {2+\sqrt {3}}}\right )}{2 \sqrt {3 \left (2+\sqrt {3}\right )}} \]
[Out]
Time = 0.01 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.167, Rules used = {1107, 209} \[ \int \frac {1}{1+4 x^2+x^4} \, dx=\frac {\arctan \left (\frac {x}{\sqrt {2-\sqrt {3}}}\right )}{2 \sqrt {3 \left (2-\sqrt {3}\right )}}-\frac {\arctan \left (\frac {x}{\sqrt {2+\sqrt {3}}}\right )}{2 \sqrt {3 \left (2+\sqrt {3}\right )}} \]
[In]
[Out]
Rule 209
Rule 1107
Rubi steps \begin{align*} \text {integral}& = \frac {\int \frac {1}{2-\sqrt {3}+x^2} \, dx}{2 \sqrt {3}}-\frac {\int \frac {1}{2+\sqrt {3}+x^2} \, dx}{2 \sqrt {3}} \\ & = \frac {\arctan \left (\frac {x}{\sqrt {2-\sqrt {3}}}\right )}{2 \sqrt {3 \left (2-\sqrt {3}\right )}}-\frac {\arctan \left (\frac {x}{\sqrt {2+\sqrt {3}}}\right )}{2 \sqrt {3 \left (2+\sqrt {3}\right )}} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.00 \[ \int \frac {1}{1+4 x^2+x^4} \, dx=\frac {\arctan \left (\frac {x}{\sqrt {2-\sqrt {3}}}\right )}{2 \sqrt {3 \left (2-\sqrt {3}\right )}}-\frac {\arctan \left (\frac {x}{\sqrt {2+\sqrt {3}}}\right )}{2 \sqrt {3 \left (2+\sqrt {3}\right )}} \]
[In]
[Out]
Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.07 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.49
method | result | size |
risch | \(\frac {\left (\munderset {\textit {\_R} =\operatorname {RootOf}\left (\textit {\_Z}^{4}+4 \textit {\_Z}^{2}+1\right )}{\sum }\frac {\ln \left (x -\textit {\_R} \right )}{\textit {\_R}^{3}+2 \textit {\_R}}\right )}{4}\) | \(33\) |
default | \(\frac {\sqrt {3}\, \arctan \left (\frac {2 x}{\sqrt {6}-\sqrt {2}}\right )}{3 \sqrt {6}-3 \sqrt {2}}-\frac {\sqrt {3}\, \arctan \left (\frac {2 x}{\sqrt {6}+\sqrt {2}}\right )}{3 \left (\sqrt {6}+\sqrt {2}\right )}\) | \(60\) |
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 123 vs. \(2 (55) = 110\).
Time = 0.25 (sec) , antiderivative size = 123, normalized size of antiderivative = 1.84 \[ \int \frac {1}{1+4 x^2+x^4} \, dx=-\frac {1}{12} \, \sqrt {3} \sqrt {\sqrt {3} - 2} \log \left ({\left (\sqrt {3} + 2\right )} \sqrt {\sqrt {3} - 2} + x\right ) + \frac {1}{12} \, \sqrt {3} \sqrt {\sqrt {3} - 2} \log \left (-{\left (\sqrt {3} + 2\right )} \sqrt {\sqrt {3} - 2} + x\right ) - \frac {1}{12} \, \sqrt {3} \sqrt {-\sqrt {3} - 2} \log \left ({\left (\sqrt {3} - 2\right )} \sqrt {-\sqrt {3} - 2} + x\right ) + \frac {1}{12} \, \sqrt {3} \sqrt {-\sqrt {3} - 2} \log \left (-{\left (\sqrt {3} - 2\right )} \sqrt {-\sqrt {3} - 2} + x\right ) \]
[In]
[Out]
Time = 0.14 (sec) , antiderivative size = 92, normalized size of antiderivative = 1.37 \[ \int \frac {1}{1+4 x^2+x^4} \, dx=- 2 \sqrt {\frac {1}{24} - \frac {\sqrt {3}}{48}} \operatorname {atan}{\left (\frac {x}{\sqrt {3} \sqrt {2 - \sqrt {3}} + 2 \sqrt {2 - \sqrt {3}}} \right )} - 2 \sqrt {\frac {\sqrt {3}}{48} + \frac {1}{24}} \operatorname {atan}{\left (\frac {x}{- 2 \sqrt {\sqrt {3} + 2} + \sqrt {3} \sqrt {\sqrt {3} + 2}} \right )} \]
[In]
[Out]
\[ \int \frac {1}{1+4 x^2+x^4} \, dx=\int { \frac {1}{x^{4} + 4 \, x^{2} + 1} \,d x } \]
[In]
[Out]
none
Time = 0.30 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.76 \[ \int \frac {1}{1+4 x^2+x^4} \, dx=\frac {1}{12} \, {\left (\sqrt {6} - 3 \, \sqrt {2}\right )} \arctan \left (\frac {2 \, x}{\sqrt {6} + \sqrt {2}}\right ) + \frac {1}{12} \, {\left (\sqrt {6} + 3 \, \sqrt {2}\right )} \arctan \left (\frac {2 \, x}{\sqrt {6} - \sqrt {2}}\right ) \]
[In]
[Out]
Time = 0.20 (sec) , antiderivative size = 117, normalized size of antiderivative = 1.75 \[ \int \frac {1}{1+4 x^2+x^4} \, dx=2\,\mathrm {atanh}\left (\frac {24\,x\,\sqrt {\frac {\sqrt {3}}{48}-\frac {1}{24}}}{2\,\sqrt {3}-4}-\frac {16\,\sqrt {3}\,x\,\sqrt {\frac {\sqrt {3}}{48}-\frac {1}{24}}}{2\,\sqrt {3}-4}\right )\,\sqrt {\frac {\sqrt {3}}{48}-\frac {1}{24}}-2\,\mathrm {atanh}\left (\frac {24\,x\,\sqrt {-\frac {\sqrt {3}}{48}-\frac {1}{24}}}{2\,\sqrt {3}+4}+\frac {16\,\sqrt {3}\,x\,\sqrt {-\frac {\sqrt {3}}{48}-\frac {1}{24}}}{2\,\sqrt {3}+4}\right )\,\sqrt {-\frac {\sqrt {3}}{48}-\frac {1}{24}} \]
[In]
[Out]