Integrand size = 13, antiderivative size = 35 \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=-\frac {\sqrt {-1+x^6}}{3 x^3}+\frac {1}{3} \log \left (x^3+\sqrt {-1+x^6}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {281, 283, 223, 212} \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=\frac {1}{3} \text {arctanh}\left (\frac {x^3}{\sqrt {x^6-1}}\right )-\frac {\sqrt {x^6-1}}{3 x^3} \]
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Rule 212
Rule 223
Rule 281
Rule 283
Rubi steps \begin{align*} \text {integral}& = \frac {1}{3} \text {Subst}\left (\int \frac {\sqrt {-1+x^2}}{x^2} \, dx,x,x^3\right ) \\ & = -\frac {\sqrt {-1+x^6}}{3 x^3}+\frac {1}{3} \text {Subst}\left (\int \frac {1}{\sqrt {-1+x^2}} \, dx,x,x^3\right ) \\ & = -\frac {\sqrt {-1+x^6}}{3 x^3}+\frac {1}{3} \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\frac {x^3}{\sqrt {-1+x^6}}\right ) \\ & = -\frac {\sqrt {-1+x^6}}{3 x^3}+\frac {1}{3} \text {arctanh}\left (\frac {x^3}{\sqrt {-1+x^6}}\right ) \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00 \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=-\frac {\sqrt {-1+x^6}}{3 x^3}+\frac {1}{3} \log \left (x^3+\sqrt {-1+x^6}\right ) \]
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Time = 1.16 (sec) , antiderivative size = 28, normalized size of antiderivative = 0.80
method | result | size |
trager | \(-\frac {\sqrt {x^{6}-1}}{3 x^{3}}+\frac {\ln \left (x^{3}+\sqrt {x^{6}-1}\right )}{3}\) | \(28\) |
pseudoelliptic | \(\frac {\ln \left (x^{3}+\sqrt {x^{6}-1}\right ) x^{3}-\sqrt {x^{6}-1}}{3 x^{3}}\) | \(32\) |
risch | \(-\frac {\sqrt {x^{6}-1}}{3 x^{3}}+\frac {\sqrt {-\operatorname {signum}\left (x^{6}-1\right )}\, \arcsin \left (x^{3}\right )}{3 \sqrt {\operatorname {signum}\left (x^{6}-1\right )}}\) | \(38\) |
meijerg | \(-\frac {i \sqrt {\operatorname {signum}\left (x^{6}-1\right )}\, \left (-\frac {4 i \sqrt {\pi }\, \sqrt {-x^{6}+1}}{x^{3}}-4 i \sqrt {\pi }\, \arcsin \left (x^{3}\right )\right )}{12 \sqrt {\pi }\, \sqrt {-\operatorname {signum}\left (x^{6}-1\right )}}\) | \(54\) |
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none
Time = 0.25 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.97 \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=-\frac {x^{3} \log \left (-x^{3} + \sqrt {x^{6} - 1}\right ) + x^{3} + \sqrt {x^{6} - 1}}{3 \, x^{3}} \]
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Result contains complex when optimal does not.
Time = 0.71 (sec) , antiderivative size = 76, normalized size of antiderivative = 2.17 \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=\begin {cases} - \frac {x^{3}}{3 \sqrt {x^{6} - 1}} + \frac {\operatorname {acosh}{\left (x^{3} \right )}}{3} + \frac {1}{3 x^{3} \sqrt {x^{6} - 1}} & \text {for}\: \left |{x^{6}}\right | > 1 \\\frac {i x^{3}}{3 \sqrt {1 - x^{6}}} - \frac {i \operatorname {asin}{\left (x^{3} \right )}}{3} - \frac {i}{3 x^{3} \sqrt {1 - x^{6}}} & \text {otherwise} \end {cases} \]
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Time = 0.19 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.29 \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=-\frac {\sqrt {x^{6} - 1}}{3 \, x^{3}} + \frac {1}{6} \, \log \left (\frac {\sqrt {x^{6} - 1}}{x^{3}} + 1\right ) - \frac {1}{6} \, \log \left (\frac {\sqrt {x^{6} - 1}}{x^{3}} - 1\right ) \]
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Time = 0.28 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.31 \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=-\frac {2 \, \sqrt {-\frac {1}{x^{6}} + 1} - \log \left (\sqrt {-\frac {1}{x^{6}} + 1} + 1\right ) + \log \left (-\sqrt {-\frac {1}{x^{6}} + 1} + 1\right )}{6 \, \mathrm {sgn}\left (x\right )} \]
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Timed out. \[ \int \frac {\sqrt {-1+x^6}}{x^4} \, dx=\int \frac {\sqrt {x^6-1}}{x^4} \,d x \]
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