Optimal. Leaf size=14 \[ \frac{1}{2} \tan ^{-1}\left (\sqrt{x^4-1}\right ) \]
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Rubi [A] time = 0.0068633, antiderivative size = 14, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.231, Rules used = {266, 63, 203} \[ \frac{1}{2} \tan ^{-1}\left (\sqrt{x^4-1}\right ) \]
Antiderivative was successfully verified.
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Rule 266
Rule 63
Rule 203
Rubi steps
\begin{align*} \int \frac{1}{x \sqrt{-1+x^4}} \, dx &=\frac{1}{4} \operatorname{Subst}\left (\int \frac{1}{\sqrt{-1+x} x} \, dx,x,x^4\right )\\ &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{1+x^2} \, dx,x,\sqrt{-1+x^4}\right )\\ &=\frac{1}{2} \tan ^{-1}\left (\sqrt{-1+x^4}\right )\\ \end{align*}
Mathematica [A] time = 0.0027186, size = 14, normalized size = 1. \[ \frac{1}{2} \tan ^{-1}\left (\sqrt{x^4-1}\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.008, size = 11, normalized size = 0.8 \begin{align*} -{\frac{1}{2}\arctan \left ({\frac{1}{\sqrt{{x}^{4}-1}}} \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.50476, size = 14, normalized size = 1. \begin{align*} \frac{1}{2} \, \arctan \left (\sqrt{x^{4} - 1}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.50864, size = 36, normalized size = 2.57 \begin{align*} \frac{1}{2} \, \arctan \left (\sqrt{x^{4} - 1}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 1.35233, size = 24, normalized size = 1.71 \begin{align*} \begin{cases} \frac{i \operatorname{acosh}{\left (\frac{1}{x^{2}} \right )}}{2} & \text{for}\: \frac{1}{\left |{x^{4}}\right |} > 1 \\- \frac{\operatorname{asin}{\left (\frac{1}{x^{2}} \right )}}{2} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.18723, size = 14, normalized size = 1. \begin{align*} \frac{1}{2} \, \arctan \left (\sqrt{x^{4} - 1}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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