Optimal. Leaf size=108 \[ -\frac{b^{3/2} \sqrt [4]{1-\frac{b x^4}{a}} E\left (\left .\frac{1}{2} \sin ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{4 a^{3/2} \sqrt [4]{a-b x^4}}-\frac{b \left (a-b x^4\right )^{3/4}}{4 a^2 x^2}-\frac{\left (a-b x^4\right )^{3/4}}{6 a x^6} \]
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Rubi [A] time = 0.0659651, antiderivative size = 108, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 4, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {275, 325, 229, 228} \[ -\frac{b^{3/2} \sqrt [4]{1-\frac{b x^4}{a}} E\left (\left .\frac{1}{2} \sin ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{4 a^{3/2} \sqrt [4]{a-b x^4}}-\frac{b \left (a-b x^4\right )^{3/4}}{4 a^2 x^2}-\frac{\left (a-b x^4\right )^{3/4}}{6 a x^6} \]
Antiderivative was successfully verified.
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Rule 275
Rule 325
Rule 229
Rule 228
Rubi steps
\begin{align*} \int \frac{1}{x^7 \sqrt [4]{a-b x^4}} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{x^4 \sqrt [4]{a-b x^2}} \, dx,x,x^2\right )\\ &=-\frac{\left (a-b x^4\right )^{3/4}}{6 a x^6}+\frac{b \operatorname{Subst}\left (\int \frac{1}{x^2 \sqrt [4]{a-b x^2}} \, dx,x,x^2\right )}{4 a}\\ &=-\frac{\left (a-b x^4\right )^{3/4}}{6 a x^6}-\frac{b \left (a-b x^4\right )^{3/4}}{4 a^2 x^2}-\frac{b^2 \operatorname{Subst}\left (\int \frac{1}{\sqrt [4]{a-b x^2}} \, dx,x,x^2\right )}{8 a^2}\\ &=-\frac{\left (a-b x^4\right )^{3/4}}{6 a x^6}-\frac{b \left (a-b x^4\right )^{3/4}}{4 a^2 x^2}-\frac{\left (b^2 \sqrt [4]{1-\frac{b x^4}{a}}\right ) \operatorname{Subst}\left (\int \frac{1}{\sqrt [4]{1-\frac{b x^2}{a}}} \, dx,x,x^2\right )}{8 a^2 \sqrt [4]{a-b x^4}}\\ &=-\frac{\left (a-b x^4\right )^{3/4}}{6 a x^6}-\frac{b \left (a-b x^4\right )^{3/4}}{4 a^2 x^2}-\frac{b^{3/2} \sqrt [4]{1-\frac{b x^4}{a}} E\left (\left .\frac{1}{2} \sin ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{4 a^{3/2} \sqrt [4]{a-b x^4}}\\ \end{align*}
Mathematica [C] time = 0.0106891, size = 52, normalized size = 0.48 \[ -\frac{\sqrt [4]{1-\frac{b x^4}{a}} \, _2F_1\left (-\frac{3}{2},\frac{1}{4};-\frac{1}{2};\frac{b x^4}{a}\right )}{6 x^6 \sqrt [4]{a-b x^4}} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.03, size = 0, normalized size = 0. \begin{align*} \int{\frac{1}{{x}^{7}}{\frac{1}{\sqrt [4]{-b{x}^{4}+a}}}}\, dx \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{1}{{\left (-b x^{4} + a\right )}^{\frac{1}{4}} x^{7}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (-\frac{{\left (-b x^{4} + a\right )}^{\frac{3}{4}}}{b x^{11} - a x^{7}}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 1.64322, size = 34, normalized size = 0.31 \begin{align*} - \frac{{{}_{2}F_{1}\left (\begin{matrix} - \frac{3}{2}, \frac{1}{4} \\ - \frac{1}{2} \end{matrix}\middle |{\frac{b x^{4} e^{2 i \pi }}{a}} \right )}}{6 \sqrt [4]{a} x^{6}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{{\left (-b x^{4} + a\right )}^{\frac{1}{4}} x^{7}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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