Optimal. Leaf size=101 \[ -\frac{3 a^2 \tan ^{-1}\left (\frac{\sqrt [4]{b} x}{\sqrt [4]{a+b x^4}}\right )}{64 b^{5/4}}-\frac{3 a^2 \tanh ^{-1}\left (\frac{\sqrt [4]{b} x}{\sqrt [4]{a+b x^4}}\right )}{64 b^{5/4}}+\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}+\frac{3 a x \left (a+b x^4\right )^{3/4}}{32 b} \]
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Rubi [A] time = 0.0321504, antiderivative size = 101, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.4, Rules used = {279, 321, 240, 212, 206, 203} \[ -\frac{3 a^2 \tan ^{-1}\left (\frac{\sqrt [4]{b} x}{\sqrt [4]{a+b x^4}}\right )}{64 b^{5/4}}-\frac{3 a^2 \tanh ^{-1}\left (\frac{\sqrt [4]{b} x}{\sqrt [4]{a+b x^4}}\right )}{64 b^{5/4}}+\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}+\frac{3 a x \left (a+b x^4\right )^{3/4}}{32 b} \]
Antiderivative was successfully verified.
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Rule 279
Rule 321
Rule 240
Rule 212
Rule 206
Rule 203
Rubi steps
\begin{align*} \int x^4 \left (a+b x^4\right )^{3/4} \, dx &=\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}+\frac{1}{8} (3 a) \int \frac{x^4}{\sqrt [4]{a+b x^4}} \, dx\\ &=\frac{3 a x \left (a+b x^4\right )^{3/4}}{32 b}+\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}-\frac{\left (3 a^2\right ) \int \frac{1}{\sqrt [4]{a+b x^4}} \, dx}{32 b}\\ &=\frac{3 a x \left (a+b x^4\right )^{3/4}}{32 b}+\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}-\frac{\left (3 a^2\right ) \operatorname{Subst}\left (\int \frac{1}{1-b x^4} \, dx,x,\frac{x}{\sqrt [4]{a+b x^4}}\right )}{32 b}\\ &=\frac{3 a x \left (a+b x^4\right )^{3/4}}{32 b}+\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}-\frac{\left (3 a^2\right ) \operatorname{Subst}\left (\int \frac{1}{1-\sqrt{b} x^2} \, dx,x,\frac{x}{\sqrt [4]{a+b x^4}}\right )}{64 b}-\frac{\left (3 a^2\right ) \operatorname{Subst}\left (\int \frac{1}{1+\sqrt{b} x^2} \, dx,x,\frac{x}{\sqrt [4]{a+b x^4}}\right )}{64 b}\\ &=\frac{3 a x \left (a+b x^4\right )^{3/4}}{32 b}+\frac{1}{8} x^5 \left (a+b x^4\right )^{3/4}-\frac{3 a^2 \tan ^{-1}\left (\frac{\sqrt [4]{b} x}{\sqrt [4]{a+b x^4}}\right )}{64 b^{5/4}}-\frac{3 a^2 \tanh ^{-1}\left (\frac{\sqrt [4]{b} x}{\sqrt [4]{a+b x^4}}\right )}{64 b^{5/4}}\\ \end{align*}
Mathematica [C] time = 0.0452979, size = 62, normalized size = 0.61 \[ \frac{x \left (a+b x^4\right )^{3/4} \left (-\frac{a \, _2F_1\left (-\frac{3}{4},\frac{1}{4};\frac{5}{4};-\frac{b x^4}{a}\right )}{\left (\frac{b x^4}{a}+1\right )^{3/4}}+a+b x^4\right )}{8 b} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.024, size = 0, normalized size = 0. \begin{align*} \int{x}^{4} \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(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.91213, size = 506, normalized size = 5.01 \begin{align*} -\frac{12 \, \left (\frac{a^{8}}{b^{5}}\right )^{\frac{1}{4}} b \arctan \left (-\frac{{\left (b x^{4} + a\right )}^{\frac{1}{4}} \left (\frac{a^{8}}{b^{5}}\right )^{\frac{1}{4}} a^{6} b - \left (\frac{a^{8}}{b^{5}}\right )^{\frac{1}{4}} b x \sqrt{\frac{\sqrt{\frac{a^{8}}{b^{5}}} a^{8} b^{3} x^{2} + \sqrt{b x^{4} + a} a^{12}}{x^{2}}}}{a^{8} x}\right ) + 3 \, \left (\frac{a^{8}}{b^{5}}\right )^{\frac{1}{4}} b \log \left (\frac{27 \,{\left ({\left (b x^{4} + a\right )}^{\frac{1}{4}} a^{6} + \left (\frac{a^{8}}{b^{5}}\right )^{\frac{3}{4}} b^{4} x\right )}}{x}\right ) - 3 \, \left (\frac{a^{8}}{b^{5}}\right )^{\frac{1}{4}} b \log \left (\frac{27 \,{\left ({\left (b x^{4} + a\right )}^{\frac{1}{4}} a^{6} - \left (\frac{a^{8}}{b^{5}}\right )^{\frac{3}{4}} b^{4} x\right )}}{x}\right ) - 4 \,{\left (4 \, b x^{5} + 3 \, a x\right )}{\left (b x^{4} + a\right )}^{\frac{3}{4}}}{128 \, b} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [C] time = 2.56215, size = 39, normalized size = 0.39 \begin{align*} \frac{a^{\frac{3}{4}} x^{5} \Gamma \left (\frac{5}{4}\right ){{}_{2}F_{1}\left (\begin{matrix} - \frac{3}{4}, \frac{5}{4} \\ \frac{9}{4} \end{matrix}\middle |{\frac{b x^{4} e^{i \pi }}{a}} \right )}}{4 \Gamma \left (\frac{9}{4}\right )} \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{\left (b x^{4} + a\right )}^{\frac{3}{4}} x^{4}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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