Integrand size = 13, antiderivative size = 47 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=-\frac {\sqrt [4]{-1+x^4}}{x}-\frac {1}{2} \arctan \left (\frac {x}{\sqrt [4]{-1+x^4}}\right )+\frac {1}{2} \text {arctanh}\left (\frac {x}{\sqrt [4]{-1+x^4}}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {283, 338, 304, 209, 212} \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=-\frac {1}{2} \arctan \left (\frac {x}{\sqrt [4]{x^4-1}}\right )+\frac {1}{2} \text {arctanh}\left (\frac {x}{\sqrt [4]{x^4-1}}\right )-\frac {\sqrt [4]{x^4-1}}{x} \]
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Rule 209
Rule 212
Rule 283
Rule 304
Rule 338
Rubi steps \begin{align*} \text {integral}& = -\frac {\sqrt [4]{-1+x^4}}{x}+\int \frac {x^2}{\left (-1+x^4\right )^{3/4}} \, dx \\ & = -\frac {\sqrt [4]{-1+x^4}}{x}+\text {Subst}\left (\int \frac {x^2}{1-x^4} \, dx,x,\frac {x}{\sqrt [4]{-1+x^4}}\right ) \\ & = -\frac {\sqrt [4]{-1+x^4}}{x}+\frac {1}{2} \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\frac {x}{\sqrt [4]{-1+x^4}}\right )-\frac {1}{2} \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\frac {x}{\sqrt [4]{-1+x^4}}\right ) \\ & = -\frac {\sqrt [4]{-1+x^4}}{x}-\frac {1}{2} \arctan \left (\frac {x}{\sqrt [4]{-1+x^4}}\right )+\frac {1}{2} \text {arctanh}\left (\frac {x}{\sqrt [4]{-1+x^4}}\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.00 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=-\frac {\sqrt [4]{-1+x^4}}{x}-\frac {1}{2} \arctan \left (\frac {x}{\sqrt [4]{-1+x^4}}\right )+\frac {1}{2} \text {arctanh}\left (\frac {x}{\sqrt [4]{-1+x^4}}\right ) \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 2.87 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.70
method | result | size |
meijerg | \(-\frac {\operatorname {signum}\left (x^{4}-1\right )^{\frac {1}{4}} \operatorname {hypergeom}\left (\left [-\frac {1}{4}, -\frac {1}{4}\right ], \left [\frac {3}{4}\right ], x^{4}\right )}{{\left (-\operatorname {signum}\left (x^{4}-1\right )\right )}^{\frac {1}{4}} x}\) | \(33\) |
risch | \(-\frac {\left (x^{4}-1\right )^{\frac {1}{4}}}{x}+\frac {{\left (-\operatorname {signum}\left (x^{4}-1\right )\right )}^{\frac {3}{4}} x^{3} \operatorname {hypergeom}\left (\left [\frac {3}{4}, \frac {3}{4}\right ], \left [\frac {7}{4}\right ], x^{4}\right )}{3 \operatorname {signum}\left (x^{4}-1\right )^{\frac {3}{4}}}\) | \(46\) |
pseudoelliptic | \(\frac {-\ln \left (\frac {\left (x^{4}-1\right )^{\frac {1}{4}}-x}{x}\right ) x +\ln \left (\frac {\left (x^{4}-1\right )^{\frac {1}{4}}+x}{x}\right ) x +2 \arctan \left (\frac {\left (x^{4}-1\right )^{\frac {1}{4}}}{x}\right ) x -4 \left (x^{4}-1\right )^{\frac {1}{4}}}{4 x}\) | \(66\) |
trager | \(-\frac {\left (x^{4}-1\right )^{\frac {1}{4}}}{x}+\frac {\ln \left (2 \left (x^{4}-1\right )^{\frac {3}{4}} x +2 x^{2} \sqrt {x^{4}-1}+2 x^{3} \left (x^{4}-1\right )^{\frac {1}{4}}+2 x^{4}-1\right )}{4}-\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (-2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \sqrt {x^{4}-1}\, x^{2}+2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) x^{4}+2 \left (x^{4}-1\right )^{\frac {3}{4}} x -2 x^{3} \left (x^{4}-1\right )^{\frac {1}{4}}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right )\right )}{4}\) | \(127\) |
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Leaf count of result is larger than twice the leaf count of optimal. 85 vs. \(2 (37) = 74\).
Time = 1.44 (sec) , antiderivative size = 85, normalized size of antiderivative = 1.81 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=\frac {x \arctan \left (2 \, {\left (x^{4} - 1\right )}^{\frac {1}{4}} x^{3} + 2 \, {\left (x^{4} - 1\right )}^{\frac {3}{4}} x\right ) + x \log \left (2 \, x^{4} + 2 \, {\left (x^{4} - 1\right )}^{\frac {1}{4}} x^{3} + 2 \, \sqrt {x^{4} - 1} x^{2} + 2 \, {\left (x^{4} - 1\right )}^{\frac {3}{4}} x - 1\right ) - 4 \, {\left (x^{4} - 1\right )}^{\frac {1}{4}}}{4 \, x} \]
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Result contains complex when optimal does not.
Time = 0.55 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.72 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=\frac {e^{\frac {i \pi }{4}} \Gamma \left (- \frac {1}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {1}{4}, - \frac {1}{4} \\ \frac {3}{4} \end {matrix}\middle | {x^{4}} \right )}}{4 x \Gamma \left (\frac {3}{4}\right )} \]
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Time = 0.27 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.26 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=-\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x} + \frac {1}{2} \, \arctan \left (\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x}\right ) + \frac {1}{4} \, \log \left (\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x} + 1\right ) - \frac {1}{4} \, \log \left (\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x} - 1\right ) \]
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Time = 0.28 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.28 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=-\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x} + \frac {1}{2} \, \arctan \left (\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x}\right ) + \frac {1}{4} \, \log \left (\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x} + 1\right ) - \frac {1}{4} \, \log \left (-\frac {{\left (x^{4} - 1\right )}^{\frac {1}{4}}}{x} + 1\right ) \]
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Time = 5.68 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.62 \[ \int \frac {\sqrt [4]{-1+x^4}}{x^2} \, dx=-\frac {{\left (x^4-1\right )}^{1/4}\,{{}}_2{\mathrm {F}}_1\left (-\frac {1}{4},-\frac {1}{4};\ \frac {3}{4};\ x^4\right )}{x\,{\left (1-x^4\right )}^{1/4}} \]
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