Integrand size = 13, antiderivative size = 45 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=-\frac {\sqrt [4]{1+x^2}}{2 x^2}+\frac {3}{4} \arctan \left (\sqrt [4]{1+x^2}\right )+\frac {3}{4} \text {arctanh}\left (\sqrt [4]{1+x^2}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.462, Rules used = {272, 44, 65, 218, 212, 209} \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=\frac {3}{4} \arctan \left (\sqrt [4]{x^2+1}\right )+\frac {3}{4} \text {arctanh}\left (\sqrt [4]{x^2+1}\right )-\frac {\sqrt [4]{x^2+1}}{2 x^2} \]
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Rule 44
Rule 65
Rule 209
Rule 212
Rule 218
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{x^2 (1+x)^{3/4}} \, dx,x,x^2\right ) \\ & = -\frac {\sqrt [4]{1+x^2}}{2 x^2}-\frac {3}{8} \text {Subst}\left (\int \frac {1}{x (1+x)^{3/4}} \, dx,x,x^2\right ) \\ & = -\frac {\sqrt [4]{1+x^2}}{2 x^2}-\frac {3}{2} \text {Subst}\left (\int \frac {1}{-1+x^4} \, dx,x,\sqrt [4]{1+x^2}\right ) \\ & = -\frac {\sqrt [4]{1+x^2}}{2 x^2}+\frac {3}{4} \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\sqrt [4]{1+x^2}\right )+\frac {3}{4} \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\sqrt [4]{1+x^2}\right ) \\ & = -\frac {\sqrt [4]{1+x^2}}{2 x^2}+\frac {3}{4} \arctan \left (\sqrt [4]{1+x^2}\right )+\frac {3}{4} \text {arctanh}\left (\sqrt [4]{1+x^2}\right ) \\ \end{align*}
Time = 0.04 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=-\frac {\sqrt [4]{1+x^2}}{2 x^2}+\frac {3}{4} \arctan \left (\sqrt [4]{1+x^2}\right )+\frac {3}{4} \text {arctanh}\left (\sqrt [4]{1+x^2}\right ) \]
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Result contains higher order function than in optimal. Order 5 vs. order 3.
Time = 1.46 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.16
method | result | size |
meijerg | \(\frac {\frac {21 \Gamma \left (\frac {3}{4}\right ) x^{2} \operatorname {hypergeom}\left (\left [1, 1, \frac {11}{4}\right ], \left [2, 3\right ], -x^{2}\right )}{32}-\frac {3 \left (\frac {1}{3}-3 \ln \left (2\right )+\frac {\pi }{2}+2 \ln \left (x \right )\right ) \Gamma \left (\frac {3}{4}\right )}{4}-\frac {\Gamma \left (\frac {3}{4}\right )}{x^{2}}}{2 \Gamma \left (\frac {3}{4}\right )}\) | \(52\) |
risch | \(-\frac {\left (x^{2}+1\right )^{\frac {1}{4}}}{2 x^{2}}-\frac {3 \left (-\frac {3 \Gamma \left (\frac {3}{4}\right ) x^{2} \operatorname {hypergeom}\left (\left [1, 1, \frac {7}{4}\right ], \left [2, 2\right ], -x^{2}\right )}{4}+\left (-3 \ln \left (2\right )+\frac {\pi }{2}+2 \ln \left (x \right )\right ) \Gamma \left (\frac {3}{4}\right )\right )}{8 \Gamma \left (\frac {3}{4}\right )}\) | \(56\) |
pseudoelliptic | \(\frac {-3 \ln \left (\left (x^{2}+1\right )^{\frac {1}{4}}-1\right ) x^{2}+6 \arctan \left (\left (x^{2}+1\right )^{\frac {1}{4}}\right ) x^{2}+3 \ln \left (\left (x^{2}+1\right )^{\frac {1}{4}}+1\right ) x^{2}-4 \left (x^{2}+1\right )^{\frac {1}{4}}}{8 x^{2}}\) | \(59\) |
trager | \(-\frac {\left (x^{2}+1\right )^{\frac {1}{4}}}{2 x^{2}}-\frac {3 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (\frac {2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \sqrt {x^{2}+1}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) x^{2}-2 \left (x^{2}+1\right )^{\frac {3}{4}}-2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right )+2 \left (x^{2}+1\right )^{\frac {1}{4}}}{x^{2}}\right )}{8}-\frac {3 \ln \left (-\frac {2 \left (x^{2}+1\right )^{\frac {3}{4}}-2 \sqrt {x^{2}+1}-x^{2}+2 \left (x^{2}+1\right )^{\frac {1}{4}}-2}{x^{2}}\right )}{8}\) | \(122\) |
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Time = 0.26 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.29 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=\frac {6 \, x^{2} \arctan \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}}\right ) + 3 \, x^{2} \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} + 1\right ) - 3 \, x^{2} \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} - 1\right ) - 4 \, {\left (x^{2} + 1\right )}^{\frac {1}{4}}}{8 \, x^{2}} \]
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Result contains complex when optimal does not.
Time = 0.64 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.71 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=- \frac {\Gamma \left (\frac {7}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {3}{4}, \frac {7}{4} \\ \frac {11}{4} \end {matrix}\middle | {\frac {e^{i \pi }}{x^{2}}} \right )}}{2 x^{\frac {7}{2}} \Gamma \left (\frac {11}{4}\right )} \]
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Time = 0.27 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.04 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=-\frac {{\left (x^{2} + 1\right )}^{\frac {1}{4}}}{2 \, x^{2}} + \frac {3}{4} \, \arctan \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}}\right ) + \frac {3}{8} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} + 1\right ) - \frac {3}{8} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Time = 0.26 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.04 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=-\frac {{\left (x^{2} + 1\right )}^{\frac {1}{4}}}{2 \, x^{2}} + \frac {3}{4} \, \arctan \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}}\right ) + \frac {3}{8} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} + 1\right ) - \frac {3}{8} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Time = 5.58 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.73 \[ \int \frac {1}{x^3 \left (1+x^2\right )^{3/4}} \, dx=\frac {3\,\mathrm {atan}\left ({\left (x^2+1\right )}^{1/4}\right )}{4}+\frac {3\,\mathrm {atanh}\left ({\left (x^2+1\right )}^{1/4}\right )}{4}-\frac {{\left (x^2+1\right )}^{1/4}}{2\,x^2} \]
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