Optimal. Leaf size=108 \[ \frac{5 b^{3/2} \left (1-\frac{b x^4}{a}\right )^{3/4} \text{EllipticF}\left (\frac{1}{2} \sin ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right ),2\right )}{12 a^{3/2} \left (a-b x^4\right )^{3/4}}-\frac{5 b \sqrt [4]{a-b x^4}}{12 a^2 x^2}-\frac{\sqrt [4]{a-b x^4}}{6 a x^6} \]
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Rubi [A] time = 0.0675386, 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, 233, 232} \[ \frac{5 b^{3/2} \left (1-\frac{b x^4}{a}\right )^{3/4} F\left (\left .\frac{1}{2} \sin ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{12 a^{3/2} \left (a-b x^4\right )^{3/4}}-\frac{5 b \sqrt [4]{a-b x^4}}{12 a^2 x^2}-\frac{\sqrt [4]{a-b x^4}}{6 a x^6} \]
Antiderivative was successfully verified.
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Rule 275
Rule 325
Rule 233
Rule 232
Rubi steps
\begin{align*} \int \frac{1}{x^7 \left (a-b x^4\right )^{3/4}} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{1}{x^4 \left (a-b x^2\right )^{3/4}} \, dx,x,x^2\right )\\ &=-\frac{\sqrt [4]{a-b x^4}}{6 a x^6}+\frac{(5 b) \operatorname{Subst}\left (\int \frac{1}{x^2 \left (a-b x^2\right )^{3/4}} \, dx,x,x^2\right )}{12 a}\\ &=-\frac{\sqrt [4]{a-b x^4}}{6 a x^6}-\frac{5 b \sqrt [4]{a-b x^4}}{12 a^2 x^2}+\frac{\left (5 b^2\right ) \operatorname{Subst}\left (\int \frac{1}{\left (a-b x^2\right )^{3/4}} \, dx,x,x^2\right )}{24 a^2}\\ &=-\frac{\sqrt [4]{a-b x^4}}{6 a x^6}-\frac{5 b \sqrt [4]{a-b x^4}}{12 a^2 x^2}+\frac{\left (5 b^2 \left (1-\frac{b x^4}{a}\right )^{3/4}\right ) \operatorname{Subst}\left (\int \frac{1}{\left (1-\frac{b x^2}{a}\right )^{3/4}} \, dx,x,x^2\right )}{24 a^2 \left (a-b x^4\right )^{3/4}}\\ &=-\frac{\sqrt [4]{a-b x^4}}{6 a x^6}-\frac{5 b \sqrt [4]{a-b x^4}}{12 a^2 x^2}+\frac{5 b^{3/2} \left (1-\frac{b x^4}{a}\right )^{3/4} F\left (\left .\frac{1}{2} \sin ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a}}\right )\right |2\right )}{12 a^{3/2} \left (a-b x^4\right )^{3/4}}\\ \end{align*}
Mathematica [C] time = 0.0106297, size = 52, normalized size = 0.48 \[ -\frac{\left (1-\frac{b x^4}{a}\right )^{3/4} \, _2F_1\left (-\frac{3}{2},\frac{3}{4};-\frac{1}{2};\frac{b x^4}{a}\right )}{6 x^6 \left (a-b x^4\right )^{3/4}} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.019, size = 0, normalized size = 0. \begin{align*} \int{\frac{1}{{x}^{7}} \left ( -b{x}^{4}+a \right ) ^{-{\frac{3}{4}}}}\, 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{3}{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{1}{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 = 1.96611, size = 34, normalized size = 0.31 \begin{align*} - \frac{{{}_{2}F_{1}\left (\begin{matrix} - \frac{3}{2}, \frac{3}{4} \\ - \frac{1}{2} \end{matrix}\middle |{\frac{b x^{4} e^{2 i \pi }}{a}} \right )}}{6 a^{\frac{3}{4}} 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{3}{4}} x^{7}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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