Optimal. Leaf size=126 \[ -\frac {2 c \sqrt {a+c x^4}}{7 x^3}-\frac {\left (a+c x^4\right )^{3/2}}{7 x^7}+\frac {2 c^{7/4} \left (\sqrt {a}+\sqrt {c} x^2\right ) \sqrt {\frac {a+c x^4}{\left (\sqrt {a}+\sqrt {c} x^2\right )^2}} F\left (2 \tan ^{-1}\left (\frac {\sqrt [4]{c} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{7 \sqrt [4]{a} \sqrt {a+c x^4}} \]
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Rubi [A]
time = 0.02, antiderivative size = 126, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {283, 226}
\begin {gather*} \frac {2 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 \text {ArcTan}\left (\frac {\sqrt [4]{c} x}{\sqrt [4]{a}}\right )|\frac {1}{2}\right )}{7 \sqrt [4]{a} \sqrt {a+c x^4}}-\frac {\left (a+c x^4\right )^{3/2}}{7 x^7}-\frac {2 c \sqrt {a+c x^4}}{7 x^3} \end {gather*}
Antiderivative was successfully verified.
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Rule 226
Rule 283
Rubi steps
\begin {align*} \int \frac {\left (a+c x^4\right )^{3/2}}{x^8} \, dx &=-\frac {\left (a+c x^4\right )^{3/2}}{7 x^7}+\frac {1}{7} (6 c) \int \frac {\sqrt {a+c x^4}}{x^4} \, dx\\ &=-\frac {2 c \sqrt {a+c x^4}}{7 x^3}-\frac {\left (a+c x^4\right )^{3/2}}{7 x^7}+\frac {1}{7} \left (4 c^2\right ) \int \frac {1}{\sqrt {a+c x^4}} \, dx\\ &=-\frac {2 c \sqrt {a+c x^4}}{7 x^3}-\frac {\left (a+c x^4\right )^{3/2}}{7 x^7}+\frac {2 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 )}{7 \sqrt [4]{a} \sqrt {a+c x^4}}\\ \end {align*}
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Mathematica [C] Result contains higher order function than in optimal. Order 5 vs. order 4 in
optimal.
time = 10.02, size = 52, normalized size = 0.41 \begin {gather*} -\frac {a \sqrt {a+c x^4} \, _2F_1\left (-\frac {7}{4},-\frac {3}{2};-\frac {3}{4};-\frac {c x^4}{a}\right )}{7 x^7 \sqrt {1+\frac {c x^4}{a}}} \end {gather*}
Antiderivative was successfully verified.
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Maple [C] Result contains complex when optimal does not.
time = 0.16, size = 105, normalized size = 0.83
method | result | size |
risch | \(-\frac {\sqrt {x^{4} c +a}\, \left (3 x^{4} c +a \right )}{7 x^{7}}+\frac {4 c^{2} \sqrt {1-\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}}\, \EllipticF \left (x \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}, i\right )}{7 \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}\, \sqrt {x^{4} c +a}}\) | \(97\) |
default | \(-\frac {a \sqrt {x^{4} c +a}}{7 x^{7}}-\frac {3 c \sqrt {x^{4} c +a}}{7 x^{3}}+\frac {4 c^{2} \sqrt {1-\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}}\, \EllipticF \left (x \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}, i\right )}{7 \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}\, \sqrt {x^{4} c +a}}\) | \(105\) |
elliptic | \(-\frac {a \sqrt {x^{4} c +a}}{7 x^{7}}-\frac {3 c \sqrt {x^{4} c +a}}{7 x^{3}}+\frac {4 c^{2} \sqrt {1-\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}}\, \sqrt {1+\frac {i \sqrt {c}\, x^{2}}{\sqrt {a}}}\, \EllipticF \left (x \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}, i\right )}{7 \sqrt {\frac {i \sqrt {c}}{\sqrt {a}}}\, \sqrt {x^{4} c +a}}\) | \(105\) |
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 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.08, size = 54, normalized size = 0.43 \begin {gather*} -\frac {4 \, \sqrt {a} c x^{7} \left (-\frac {c}{a}\right )^{\frac {3}{4}} F(\arcsin \left (x \left (-\frac {c}{a}\right )^{\frac {1}{4}}\right )\,|\,-1) + {\left (3 \, c x^{4} + a\right )} \sqrt {c x^{4} + a}}{7 \, x^{7}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] Result contains complex when optimal does not.
time = 0.60, size = 46, normalized size = 0.37 \begin {gather*} \frac {a^{\frac {3}{2}} \Gamma \left (- \frac {7}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {7}{4}, - \frac {3}{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 )} \end {gather*}
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 \begin {gather*} \text {could not integrate} \end {gather*}
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 \begin {gather*} \int \frac {{\left (c\,x^4+a\right )}^{3/2}}{x^8} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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