Optimal. Leaf size=20 \[ -\frac {1}{3} \tan ^{-1}\left (\frac {x}{\sqrt {x^8-x^2}}\right ) \]
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Rubi [A] time = 0.01, antiderivative size = 20, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {2008, 203} \begin {gather*} -\frac {1}{3} \tan ^{-1}\left (\frac {x}{\sqrt {x^8-x^2}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 203
Rule 2008
Rubi steps
\begin {align*} \int \frac {1}{\sqrt {-x^2+x^8}} \, dx &=-\left (\frac {1}{3} \operatorname {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\frac {x}{\sqrt {-x^2+x^8}}\right )\right )\\ &=-\frac {1}{3} \tan ^{-1}\left (\frac {x}{\sqrt {-x^2+x^8}}\right )\\ \end {align*}
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Mathematica [A] time = 0.01, size = 37, normalized size = 1.85 \begin {gather*} \frac {x \sqrt {x^6-1} \tan ^{-1}\left (\sqrt {x^6-1}\right )}{3 \sqrt {x^2 \left (x^6-1\right )}} \end {gather*}
Antiderivative was successfully verified.
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IntegrateAlgebraic [A] time = 0.06, size = 20, normalized size = 1.00 \begin {gather*} -\frac {1}{3} \tan ^{-1}\left (\frac {x}{\sqrt {x^8-x^2}}\right ) \end {gather*}
Antiderivative was successfully verified.
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fricas [A] time = 0.41, size = 18, normalized size = 0.90 \begin {gather*} \frac {1}{3} \, \arctan \left (\frac {\sqrt {x^{8} - x^{2}}}{x}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: NotImplementedError} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 26, normalized size = 1.30 \begin {gather*} -\frac {x \sqrt {x^{6}-1}\, \arcsin \left (\frac {1}{x^{3}}\right )}{3 \sqrt {x^{8}-x^{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {1}{\sqrt {x^{8} - x^{2}}}\,{d x} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.05 \begin {gather*} \int \frac {1}{\sqrt {x^8-x^2}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {1}{\sqrt {x^{8} - x^{2}}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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