Integrand size = 13, antiderivative size = 52 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=-\frac {1}{6 \left (-2+x^2\right )^{3/2}}+\frac {1}{4 \sqrt {-2+x^2}}+\frac {\arctan \left (\frac {\sqrt {-2+x^2}}{\sqrt {2}}\right )}{4 \sqrt {2}} \]
[Out]
Time = 0.02 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {272, 53, 65, 209} \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=\frac {\arctan \left (\frac {\sqrt {x^2-2}}{\sqrt {2}}\right )}{4 \sqrt {2}}+\frac {1}{4 \sqrt {x^2-2}}-\frac {1}{6 \left (x^2-2\right )^{3/2}} \]
[In]
[Out]
Rule 53
Rule 65
Rule 209
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{(-2+x)^{5/2} x} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 \left (-2+x^2\right )^{3/2}}-\frac {1}{4} \text {Subst}\left (\int \frac {1}{(-2+x)^{3/2} x} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 \left (-2+x^2\right )^{3/2}}+\frac {1}{4 \sqrt {-2+x^2}}+\frac {1}{8} \text {Subst}\left (\int \frac {1}{\sqrt {-2+x} x} \, dx,x,x^2\right ) \\ & = -\frac {1}{6 \left (-2+x^2\right )^{3/2}}+\frac {1}{4 \sqrt {-2+x^2}}+\frac {1}{4} \text {Subst}\left (\int \frac {1}{2+x^2} \, dx,x,\sqrt {-2+x^2}\right ) \\ & = -\frac {1}{6 \left (-2+x^2\right )^{3/2}}+\frac {1}{4 \sqrt {-2+x^2}}+\frac {\arctan \left (\frac {\sqrt {-2+x^2}}{\sqrt {2}}\right )}{4 \sqrt {2}} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.88 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=\frac {-8+3 x^2}{12 \left (-2+x^2\right )^{3/2}}+\frac {\arctan \left (\frac {\sqrt {-2+x^2}}{\sqrt {2}}\right )}{4 \sqrt {2}} \]
[In]
[Out]
Time = 0.42 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.67
method | result | size |
risch | \(\frac {3 x^{2}-8}{12 \left (x^{2}-2\right )^{\frac {3}{2}}}-\frac {\sqrt {2}\, \arctan \left (\frac {\sqrt {2}}{\sqrt {x^{2}-2}}\right )}{8}\) | \(35\) |
default | \(-\frac {1}{6 \left (x^{2}-2\right )^{\frac {3}{2}}}+\frac {1}{4 \sqrt {x^{2}-2}}-\frac {\sqrt {2}\, \arctan \left (\frac {\sqrt {2}}{\sqrt {x^{2}-2}}\right )}{8}\) | \(37\) |
pseudoelliptic | \(\frac {\arctan \left (\frac {\sqrt {x^{2}-2}\, \sqrt {2}}{2}\right ) \sqrt {2}\, \left (x^{2}-2\right )^{\frac {3}{2}}+2 x^{2}-\frac {16}{3}}{8 \left (x^{2}-2\right )^{\frac {3}{2}}}\) | \(41\) |
trager | \(\frac {3 x^{2}-8}{12 \left (x^{2}-2\right )^{\frac {3}{2}}}-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+2\right ) \ln \left (\frac {\sqrt {x^{2}-2}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+2\right )}{x}\right )}{8}\) | \(47\) |
meijerg | \(\frac {\sqrt {2}\, {\left (-\operatorname {signum}\left (-1+\frac {x^{2}}{2}\right )\right )}^{\frac {5}{2}} \left (\frac {3 \left (\frac {8}{3}-3 \ln \left (2\right )+2 \ln \left (x \right )+i \pi \right ) \sqrt {\pi }}{4}-2 \sqrt {\pi }+\frac {\sqrt {\pi }\, \left (-6 x^{2}+16\right )}{8 \left (-\frac {x^{2}}{2}+1\right )^{\frac {3}{2}}}-\frac {3 \sqrt {\pi }\, \ln \left (\frac {1}{2}+\frac {\sqrt {-\frac {x^{2}}{2}+1}}{2}\right )}{2}\right )}{12 \sqrt {\pi }\, \operatorname {signum}\left (-1+\frac {x^{2}}{2}\right )^{\frac {5}{2}}}\) | \(96\) |
[In]
[Out]
none
Time = 0.25 (sec) , antiderivative size = 65, normalized size of antiderivative = 1.25 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=\frac {3 \, \sqrt {2} {\left (x^{4} - 4 \, x^{2} + 4\right )} \arctan \left (-\frac {1}{2} \, \sqrt {2} x + \frac {1}{2} \, \sqrt {2} \sqrt {x^{2} - 2}\right ) + {\left (3 \, x^{2} - 8\right )} \sqrt {x^{2} - 2}}{12 \, {\left (x^{4} - 4 \, x^{2} + 4\right )}} \]
[In]
[Out]
Result contains complex when optimal does not.
Time = 1.81 (sec) , antiderivative size = 984, normalized size of antiderivative = 18.92 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=\begin {cases} \frac {6 i x^{4} \log {\left (x \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {3 i x^{4} \log {\left (x^{2} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {6 x^{4} \operatorname {asin}{\left (\frac {\sqrt {2}}{x} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {6 \sqrt {2} x^{2} \sqrt {x^{2} - 2}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {24 i x^{2} \log {\left (x \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {12 i x^{2} \log {\left (x^{2} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {24 x^{2} \operatorname {asin}{\left (\frac {\sqrt {2}}{x} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {16 \sqrt {2} \sqrt {x^{2} - 2}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {24 i \log {\left (x \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {12 i \log {\left (x^{2} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {24 \operatorname {asin}{\left (\frac {\sqrt {2}}{x} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} & \text {for}\: \left |{x^{2}}\right | > 2 \\- \frac {3 i x^{4} \log {\left (x^{2} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {6 i x^{4} \log {\left (\sqrt {1 - \frac {x^{2}}{2}} + 1 \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {3 \pi x^{4}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {3 i x^{4} \log {\left (2 \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {6 \sqrt {2} i x^{2} \sqrt {2 - x^{2}}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {12 i x^{2} \log {\left (x^{2} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {24 i x^{2} \log {\left (\sqrt {1 - \frac {x^{2}}{2}} + 1 \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {12 \pi x^{2}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {12 i x^{2} \log {\left (2 \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {16 \sqrt {2} i \sqrt {2 - x^{2}}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {12 i \log {\left (x^{2} \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {24 i \log {\left (\sqrt {1 - \frac {x^{2}}{2}} + 1 \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} - \frac {12 \pi }{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} + \frac {12 i \log {\left (2 \right )}}{24 \sqrt {2} x^{4} - 96 \sqrt {2} x^{2} + 96 \sqrt {2}} & \text {otherwise} \end {cases} \]
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.63 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=-\frac {1}{8} \, \sqrt {2} \arcsin \left (\frac {\sqrt {2}}{{\left | x \right |}}\right ) + \frac {1}{4 \, \sqrt {x^{2} - 2}} - \frac {1}{6 \, {\left (x^{2} - 2\right )}^{\frac {3}{2}}} \]
[In]
[Out]
none
Time = 0.26 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.67 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=\frac {1}{8} \, \sqrt {2} \arctan \left (\frac {1}{2} \, \sqrt {2} \sqrt {x^{2} - 2}\right ) + \frac {3 \, x^{2} - 8}{12 \, {\left (x^{2} - 2\right )}^{\frac {3}{2}}} \]
[In]
[Out]
Time = 0.55 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.65 \[ \int \frac {1}{x \left (-2+x^2\right )^{5/2}} \, dx=\frac {\sqrt {2}\,\mathrm {atan}\left (\frac {\sqrt {2}\,\sqrt {x^2-2}}{2}\right )}{8}+\frac {\frac {x^2}{4}-\frac {2}{3}}{{\left (x^2-2\right )}^{3/2}} \]
[In]
[Out]