Optimal. Leaf size=129 \[ -\frac {c^{7/4} \left (\sqrt {a}+\sqrt {c} x^2\right ) \sqrt {\frac {a+c x^4}{\left (\sqrt {a}+\sqrt {c} x^2\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{c} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{21 a^{5/4} \sqrt {a+c x^4}}-\frac {\sqrt {a+c x^4}}{7 x^7}-\frac {2 c \sqrt {a+c x^4}}{21 a x^3} \]
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Rubi [A] time = 0.03, antiderivative size = 129, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {277, 325, 220} \[ -\frac {c^{7/4} \left (\sqrt {a}+\sqrt {c} x^2\right ) \sqrt {\frac {a+c x^4}{\left (\sqrt {a}+\sqrt {c} x^2\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{c} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{21 a^{5/4} \sqrt {a+c x^4}}-\frac {2 c \sqrt {a+c x^4}}{21 a x^3}-\frac {\sqrt {a+c x^4}}{7 x^7} \]
Antiderivative was successfully verified.
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Rule 220
Rule 277
Rule 325
Rubi steps
\begin {align*} \int \frac {\sqrt {a+c x^4}}{x^8} \, dx &=-\frac {\sqrt {a+c x^4}}{7 x^7}+\frac {1}{7} (2 c) \int \frac {1}{x^4 \sqrt {a+c x^4}} \, dx\\ &=-\frac {\sqrt {a+c x^4}}{7 x^7}-\frac {2 c \sqrt {a+c x^4}}{21 a x^3}-\frac {\left (2 c^2\right ) \int \frac {1}{\sqrt {a+c x^4}} \, dx}{21 a}\\ &=-\frac {\sqrt {a+c x^4}}{7 x^7}-\frac {2 c \sqrt {a+c x^4}}{21 a x^3}-\frac {c^{7/4} \left (\sqrt {a}+\sqrt {c} x^2\right ) \sqrt {\frac {a+c x^4}{\left (\sqrt {a}+\sqrt {c} x^2\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{c} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{21 a^{5/4} \sqrt {a+c x^4}}\\ \end {align*}
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Mathematica [C] time = 0.02, size = 51, normalized size = 0.40 \[ -\frac {\sqrt {a+c x^4} \, _2F_1\left (-\frac {7}{4},-\frac {1}{2};-\frac {3}{4};-\frac {c x^4}{a}\right )}{7 x^7 \sqrt {\frac {c x^4}{a}+1}} \]
Antiderivative was successfully verified.
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fricas [F] time = 0.86, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {\sqrt {c x^{4} + a}}{x^{8}}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {\sqrt {c x^{4} + a}}{x^{8}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [C] time = 0.02, size = 110, normalized size = 0.85 \[ -\frac {2 \sqrt {-\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}+1}\, \sqrt {\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}+1}\, c^{2} \EllipticF \left (\sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}\, x , i\right )}{21 \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}\, \sqrt {c \,x^{4}+a}\, a}-\frac {2 \sqrt {c \,x^{4}+a}\, c}{21 a \,x^{3}}-\frac {\sqrt {c \,x^{4}+a}}{7 x^{7}} \]
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 \[ \int \frac {\sqrt {c x^{4} + a}}{x^{8}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int \frac {\sqrt {c\,x^4+a}}{x^8} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [C] time = 1.39, size = 46, normalized size = 0.36 \[ \frac {\sqrt {a} \Gamma \left (- \frac {7}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {7}{4}, - \frac {1}{2} \\ - \frac {3}{4} \end {matrix}\middle | {\frac {c x^{4} e^{i \pi }}{a}} \right )}}{4 x^{7} \Gamma \left (- \frac {3}{4}\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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