Optimal. Leaf size=101 \[ \frac {a x^2 \sqrt [4]{a+b x^4}}{21 b}+\frac {1}{7} x^6 \sqrt [4]{a+b x^4}-\frac {2 a^{5/2} \left (1+\frac {b x^4}{a}\right )^{3/4} F\left (\left .\frac {1}{2} \tan ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {a}}\right )\right |2\right )}{21 b^{3/2} \left (a+b x^4\right )^{3/4}} \]
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Rubi [A]
time = 0.05, antiderivative size = 101, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {281, 285, 327,
239, 237} \begin {gather*} -\frac {2 a^{5/2} \left (\frac {b x^4}{a}+1\right )^{3/4} F\left (\left .\frac {1}{2} \text {ArcTan}\left (\frac {\sqrt {b} x^2}{\sqrt {a}}\right )\right |2\right )}{21 b^{3/2} \left (a+b x^4\right )^{3/4}}+\frac {1}{7} x^6 \sqrt [4]{a+b x^4}+\frac {a x^2 \sqrt [4]{a+b x^4}}{21 b} \end {gather*}
Antiderivative was successfully verified.
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Rule 237
Rule 239
Rule 281
Rule 285
Rule 327
Rubi steps
\begin {align*} \int x^5 \sqrt [4]{a+b x^4} \, dx &=\frac {1}{2} \text {Subst}\left (\int x^2 \sqrt [4]{a+b x^2} \, dx,x,x^2\right )\\ &=\frac {1}{7} x^6 \sqrt [4]{a+b x^4}+\frac {1}{14} a \text {Subst}\left (\int \frac {x^2}{\left (a+b x^2\right )^{3/4}} \, dx,x,x^2\right )\\ &=\frac {a x^2 \sqrt [4]{a+b x^4}}{21 b}+\frac {1}{7} x^6 \sqrt [4]{a+b x^4}-\frac {a^2 \text {Subst}\left (\int \frac {1}{\left (a+b x^2\right )^{3/4}} \, dx,x,x^2\right )}{21 b}\\ &=\frac {a x^2 \sqrt [4]{a+b x^4}}{21 b}+\frac {1}{7} x^6 \sqrt [4]{a+b x^4}-\frac {\left (a^2 \left (1+\frac {b x^4}{a}\right )^{3/4}\right ) \text {Subst}\left (\int \frac {1}{\left (1+\frac {b x^2}{a}\right )^{3/4}} \, dx,x,x^2\right )}{21 b \left (a+b x^4\right )^{3/4}}\\ &=\frac {a x^2 \sqrt [4]{a+b x^4}}{21 b}+\frac {1}{7} x^6 \sqrt [4]{a+b x^4}-\frac {2 a^{5/2} \left (1+\frac {b x^4}{a}\right )^{3/4} F\left (\left .\frac {1}{2} \tan ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {a}}\right )\right |2\right )}{21 b^{3/2} \left (a+b x^4\right )^{3/4}}\\ \end {align*}
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Mathematica [C] Result contains higher order function than in optimal. Order 5 vs. order 4 in
optimal.
time = 6.67, size = 64, normalized size = 0.63 \begin {gather*} \frac {x^2 \sqrt [4]{a+b x^4} \left (a+b x^4-\frac {a \, _2F_1\left (-\frac {1}{4},\frac {1}{2};\frac {3}{2};-\frac {b x^4}{a}\right )}{\sqrt [4]{1+\frac {b x^4}{a}}}\right )}{7 b} \end {gather*}
Antiderivative was successfully verified.
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Maple [F]
time = 0.00, size = 0, normalized size = 0.00 \[\int x^{5} \left (b \,x^{4}+a \right )^{\frac {1}{4}}\, dx\]
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 [F]
time = 0.07, size = 15, normalized size = 0.15 \begin {gather*} {\rm integral}\left ({\left (b x^{4} + a\right )}^{\frac {1}{4}} x^{5}, x\right ) \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 = 0.48, size = 29, normalized size = 0.29 \begin {gather*} \frac {\sqrt [4]{a} x^{6} {{}_{2}F_{1}\left (\begin {matrix} - \frac {1}{4}, \frac {3}{2} \\ \frac {5}{2} \end {matrix}\middle | {\frac {b x^{4} e^{i \pi }}{a}} \right )}}{6} \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 x^5\,{\left (b\,x^4+a\right )}^{1/4} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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