Optimal. Leaf size=39 \[ \frac {1}{15} x^5 \, _2F_1\left (\frac {1}{2},\frac {5}{8};\frac {13}{8};-x^8\right )-\frac {\sqrt {x^8+1}}{3 x^3} \]
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Rubi [A] time = 0.01, antiderivative size = 39, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {325, 364} \[ \frac {1}{15} x^5 \, _2F_1\left (\frac {1}{2},\frac {5}{8};\frac {13}{8};-x^8\right )-\frac {\sqrt {x^8+1}}{3 x^3} \]
Antiderivative was successfully verified.
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Rule 325
Rule 364
Rubi steps
\begin {align*} \int \frac {1}{x^4 \sqrt {1+x^8}} \, dx &=-\frac {\sqrt {1+x^8}}{3 x^3}+\frac {1}{3} \int \frac {x^4}{\sqrt {1+x^8}} \, dx\\ &=-\frac {\sqrt {1+x^8}}{3 x^3}+\frac {1}{15} x^5 \, _2F_1\left (\frac {1}{2},\frac {5}{8};\frac {13}{8};-x^8\right )\\ \end {align*}
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Mathematica [A] time = 0.00, size = 22, normalized size = 0.56 \[ -\frac {\, _2F_1\left (-\frac {3}{8},\frac {1}{2};\frac {5}{8};-x^8\right )}{3 x^3} \]
Antiderivative was successfully verified.
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fricas [F] time = 0.95, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {\sqrt {x^{8} + 1}}{x^{12} + x^{4}}, x\right ) \]
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 \[ \int \frac {1}{\sqrt {x^{8} + 1} x^{4}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.15, size = 30, normalized size = 0.77 \[ \frac {x^{5} \hypergeom \left (\left [\frac {1}{2}, \frac {5}{8}\right ], \left [\frac {13}{8}\right ], -x^{8}\right )}{15}-\frac {\sqrt {x^{8}+1}}{3 x^{3}} \]
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 \[ \int \frac {1}{\sqrt {x^{8} + 1} x^{4}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.03 \[ \int \frac {1}{x^4\,\sqrt {x^8+1}} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [C] time = 0.84, size = 32, normalized size = 0.82 \[ \frac {\Gamma \left (- \frac {3}{8}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {3}{8}, \frac {1}{2} \\ \frac {5}{8} \end {matrix}\middle | {x^{8} e^{i \pi }} \right )}}{8 x^{3} \Gamma \left (\frac {5}{8}\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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