Optimal. Leaf size=85 \[ \frac{\sqrt{b c-a d} \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{c+d x^4}}{\sqrt{b c-a d}}\right )}{2 a \sqrt{b}}-\frac{\sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c+d x^4}}{\sqrt{c}}\right )}{2 a} \]
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Rubi [A] time = 0.0746659, antiderivative size = 85, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 4, integrand size = 24, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.167, Rules used = {446, 83, 63, 208} \[ \frac{\sqrt{b c-a d} \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{c+d x^4}}{\sqrt{b c-a d}}\right )}{2 a \sqrt{b}}-\frac{\sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c+d x^4}}{\sqrt{c}}\right )}{2 a} \]
Antiderivative was successfully verified.
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Rule 446
Rule 83
Rule 63
Rule 208
Rubi steps
\begin{align*} \int \frac{\sqrt{c+d x^4}}{x \left (a+b x^4\right )} \, dx &=\frac{1}{4} \operatorname{Subst}\left (\int \frac{\sqrt{c+d x}}{x (a+b x)} \, dx,x,x^4\right )\\ &=\frac{c \operatorname{Subst}\left (\int \frac{1}{x \sqrt{c+d x}} \, dx,x,x^4\right )}{4 a}-\frac{(b c-a d) \operatorname{Subst}\left (\int \frac{1}{(a+b x) \sqrt{c+d x}} \, dx,x,x^4\right )}{4 a}\\ &=\frac{c \operatorname{Subst}\left (\int \frac{1}{-\frac{c}{d}+\frac{x^2}{d}} \, dx,x,\sqrt{c+d x^4}\right )}{2 a d}-\frac{(b c-a d) \operatorname{Subst}\left (\int \frac{1}{a-\frac{b c}{d}+\frac{b x^2}{d}} \, dx,x,\sqrt{c+d x^4}\right )}{2 a d}\\ &=-\frac{\sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c+d x^4}}{\sqrt{c}}\right )}{2 a}+\frac{\sqrt{b c-a d} \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{c+d x^4}}{\sqrt{b c-a d}}\right )}{2 a \sqrt{b}}\\ \end{align*}
Mathematica [A] time = 0.0350757, size = 81, normalized size = 0.95 \[ \frac{\frac{\sqrt{b c-a d} \tanh ^{-1}\left (\frac{\sqrt{b} \sqrt{c+d x^4}}{\sqrt{b c-a d}}\right )}{\sqrt{b}}-\sqrt{c} \tanh ^{-1}\left (\frac{\sqrt{c+d x^4}}{\sqrt{c}}\right )}{2 a} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.016, size = 1037, normalized size = 12.2 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\sqrt{d x^{4} + c}}{{\left (b x^{4} + a\right )} x}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.65702, size = 851, normalized size = 10.01 \begin{align*} \left [\frac{\sqrt{\frac{b c - a d}{b}} \log \left (\frac{b d x^{4} + 2 \, b c - a d + 2 \, \sqrt{d x^{4} + c} b \sqrt{\frac{b c - a d}{b}}}{b x^{4} + a}\right ) + \sqrt{c} \log \left (\frac{d x^{4} - 2 \, \sqrt{d x^{4} + c} \sqrt{c} + 2 \, c}{x^{4}}\right )}{4 \, a}, \frac{2 \, \sqrt{-\frac{b c - a d}{b}} \arctan \left (-\frac{\sqrt{d x^{4} + c} b \sqrt{-\frac{b c - a d}{b}}}{b c - a d}\right ) + \sqrt{c} \log \left (\frac{d x^{4} - 2 \, \sqrt{d x^{4} + c} \sqrt{c} + 2 \, c}{x^{4}}\right )}{4 \, a}, \frac{2 \, \sqrt{-c} \arctan \left (\frac{\sqrt{d x^{4} + c} \sqrt{-c}}{c}\right ) + \sqrt{\frac{b c - a d}{b}} \log \left (\frac{b d x^{4} + 2 \, b c - a d + 2 \, \sqrt{d x^{4} + c} b \sqrt{\frac{b c - a d}{b}}}{b x^{4} + a}\right )}{4 \, a}, \frac{\sqrt{-\frac{b c - a d}{b}} \arctan \left (-\frac{\sqrt{d x^{4} + c} b \sqrt{-\frac{b c - a d}{b}}}{b c - a d}\right ) + \sqrt{-c} \arctan \left (\frac{\sqrt{d x^{4} + c} \sqrt{-c}}{c}\right )}{2 \, a}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 11.2061, size = 82, normalized size = 0.96 \begin{align*} \frac{2 \left (\frac{c d \operatorname{atan}{\left (\frac{\sqrt{c + d x^{4}}}{\sqrt{- c}} \right )}}{4 a \sqrt{- c}} + \frac{d \left (a d - b c\right ) \operatorname{atan}{\left (\frac{\sqrt{c + d x^{4}}}{\sqrt{\frac{a d - b c}{b}}} \right )}}{4 a b \sqrt{\frac{a d - b c}{b}}}\right )}{d} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.14372, size = 117, normalized size = 1.38 \begin{align*} -\frac{1}{2} \, d{\left (\frac{{\left (b c - a d\right )} \arctan \left (\frac{\sqrt{d x^{4} + c} b}{\sqrt{-b^{2} c + a b d}}\right )}{\sqrt{-b^{2} c + a b d} a d} - \frac{c \arctan \left (\frac{\sqrt{d x^{4} + c}}{\sqrt{-c}}\right )}{a \sqrt{-c} d}\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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