Integrand size = 9, antiderivative size = 35 \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {\arctan \left (\sqrt [4]{5} x\right )}{2 \sqrt [4]{5}}-\frac {\text {arctanh}\left (\sqrt [4]{5} x\right )}{2 \sqrt [4]{5}} \]
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Time = 0.02 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {218, 212, 209} \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {\arctan \left (\sqrt [4]{5} x\right )}{2 \sqrt [4]{5}}-\frac {\text {arctanh}\left (\sqrt [4]{5} x\right )}{2 \sqrt [4]{5}} \]
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Rule 209
Rule 212
Rule 218
Rubi steps \begin{align*} \text {integral}& = -\left (\frac {1}{2} \int \frac {1}{1-\sqrt {5} x^2} \, dx\right )-\frac {1}{2} \int \frac {1}{1+\sqrt {5} x^2} \, dx \\ & = -\frac {\arctan \left (\sqrt [4]{5} x\right )}{2 \sqrt [4]{5}}-\frac {\text {arctanh}\left (\sqrt [4]{5} x\right )}{2 \sqrt [4]{5}} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 43, normalized size of antiderivative = 1.23 \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {2 \arctan \left (\sqrt [4]{5} x\right )-\log \left (1-\sqrt [4]{5} x\right )+\log \left (1+\sqrt [4]{5} x\right )}{4 \sqrt [4]{5}} \]
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Result contains higher order function than in optimal. Order 9 vs. order 3.
Time = 0.08 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.69
method | result | size |
risch | \(\frac {\left (\munderset {\textit {\_R} =\operatorname {RootOf}\left (5 \textit {\_Z}^{4}-1\right )}{\sum }\frac {\ln \left (x -\textit {\_R} \right )}{\textit {\_R}^{3}}\right )}{20}\) | \(24\) |
default | \(-\frac {5^{\frac {3}{4}} \left (\ln \left (\frac {x +\frac {5^{\frac {3}{4}}}{5}}{x -\frac {5^{\frac {3}{4}}}{5}}\right )+2 \arctan \left (5^{\frac {1}{4}} x \right )\right )}{20}\) | \(33\) |
meijerg | \(\frac {5^{\frac {3}{4}} x \left (\ln \left (1-5^{\frac {1}{4}} \left (x^{4}\right )^{\frac {1}{4}}\right )-\ln \left (1+5^{\frac {1}{4}} \left (x^{4}\right )^{\frac {1}{4}}\right )-2 \arctan \left (5^{\frac {1}{4}} \left (x^{4}\right )^{\frac {1}{4}}\right )\right )}{20 \left (x^{4}\right )^{\frac {1}{4}}}\) | \(52\) |
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Result contains complex when optimal does not.
Time = 0.24 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.69 \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {1}{20} \cdot 5^{\frac {3}{4}} \log \left (5 \, x + 5^{\frac {3}{4}}\right ) - \frac {1}{20} i \cdot 5^{\frac {3}{4}} \log \left (5 \, x + i \cdot 5^{\frac {3}{4}}\right ) + \frac {1}{20} i \cdot 5^{\frac {3}{4}} \log \left (5 \, x - i \cdot 5^{\frac {3}{4}}\right ) + \frac {1}{20} \cdot 5^{\frac {3}{4}} \log \left (5 \, x - 5^{\frac {3}{4}}\right ) \]
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Time = 0.15 (sec) , antiderivative size = 48, normalized size of antiderivative = 1.37 \[ \int \frac {1}{-1+5 x^4} \, dx=\frac {5^{\frac {3}{4}} \log {\left (x - \frac {5^{\frac {3}{4}}}{5} \right )}}{20} - \frac {5^{\frac {3}{4}} \log {\left (x + \frac {5^{\frac {3}{4}}}{5} \right )}}{20} - \frac {5^{\frac {3}{4}} \operatorname {atan}{\left (\sqrt [4]{5} x \right )}}{10} \]
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none
Time = 0.27 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.17 \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {1}{10} \cdot 5^{\frac {3}{4}} \arctan \left (5^{\frac {1}{4}} x\right ) + \frac {1}{20} \cdot 5^{\frac {3}{4}} \log \left (\frac {\sqrt {5} x - 5^{\frac {1}{4}}}{\sqrt {5} x + 5^{\frac {1}{4}}}\right ) \]
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none
Time = 0.30 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.11 \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {1}{10} \cdot 5^{\frac {3}{4}} \arctan \left (5 \, \left (\frac {1}{5}\right )^{\frac {3}{4}} x\right ) - \frac {1}{20} \cdot 5^{\frac {3}{4}} \log \left ({\left | x + \left (\frac {1}{5}\right )^{\frac {1}{4}} \right |}\right ) + \frac {1}{20} \cdot 5^{\frac {3}{4}} \log \left ({\left | x - \left (\frac {1}{5}\right )^{\frac {1}{4}} \right |}\right ) \]
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Time = 0.17 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.51 \[ \int \frac {1}{-1+5 x^4} \, dx=-\frac {5^{3/4}\,\left (\mathrm {atan}\left (5^{1/4}\,x\right )+\mathrm {atanh}\left (5^{1/4}\,x\right )\right )}{10} \]
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