Optimal. Leaf size=59 \[ \frac {a^2 \left (a+b x^3\right )^{2/3}}{2 b^3}+\frac {\left (a+b x^3\right )^{8/3}}{8 b^3}-\frac {2 a \left (a+b x^3\right )^{5/3}}{5 b^3} \]
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Rubi [A] time = 0.03, antiderivative size = 59, 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 = {266, 43} \[ \frac {a^2 \left (a+b x^3\right )^{2/3}}{2 b^3}+\frac {\left (a+b x^3\right )^{8/3}}{8 b^3}-\frac {2 a \left (a+b x^3\right )^{5/3}}{5 b^3} \]
Antiderivative was successfully verified.
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Rule 43
Rule 266
Rubi steps
\begin {align*} \int \frac {x^8}{\sqrt [3]{a+b x^3}} \, dx &=\frac {1}{3} \operatorname {Subst}\left (\int \frac {x^2}{\sqrt [3]{a+b x}} \, dx,x,x^3\right )\\ &=\frac {1}{3} \operatorname {Subst}\left (\int \left (\frac {a^2}{b^2 \sqrt [3]{a+b x}}-\frac {2 a (a+b x)^{2/3}}{b^2}+\frac {(a+b x)^{5/3}}{b^2}\right ) \, dx,x,x^3\right )\\ &=\frac {a^2 \left (a+b x^3\right )^{2/3}}{2 b^3}-\frac {2 a \left (a+b x^3\right )^{5/3}}{5 b^3}+\frac {\left (a+b x^3\right )^{8/3}}{8 b^3}\\ \end {align*}
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Mathematica [A] time = 0.02, size = 39, normalized size = 0.66 \[ \frac {\left (a+b x^3\right )^{2/3} \left (9 a^2-6 a b x^3+5 b^2 x^6\right )}{40 b^3} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.84, size = 35, normalized size = 0.59 \[ \frac {{\left (5 \, b^{2} x^{6} - 6 \, a b x^{3} + 9 \, a^{2}\right )} {\left (b x^{3} + a\right )}^{\frac {2}{3}}}{40 \, b^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.16, size = 47, normalized size = 0.80 \[ \frac {{\left (b x^{3} + a\right )}^{\frac {2}{3}} a^{2}}{2 \, b^{3}} + \frac {5 \, {\left (b x^{3} + a\right )}^{\frac {8}{3}} - 16 \, {\left (b x^{3} + a\right )}^{\frac {5}{3}} a}{40 \, b^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.01, size = 36, normalized size = 0.61 \[ \frac {\left (b \,x^{3}+a \right )^{\frac {2}{3}} \left (5 b^{2} x^{6}-6 a b \,x^{3}+9 a^{2}\right )}{40 b^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 1.33, size = 47, normalized size = 0.80 \[ \frac {{\left (b x^{3} + a\right )}^{\frac {8}{3}}}{8 \, b^{3}} - \frac {2 \, {\left (b x^{3} + a\right )}^{\frac {5}{3}} a}{5 \, b^{3}} + \frac {{\left (b x^{3} + a\right )}^{\frac {2}{3}} a^{2}}{2 \, b^{3}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 1.08, size = 36, normalized size = 0.61 \[ {\left (b\,x^3+a\right )}^{2/3}\,\left (\frac {9\,a^2}{40\,b^3}+\frac {x^6}{8\,b}-\frac {3\,a\,x^3}{20\,b^2}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 2.73, size = 68, normalized size = 1.15 \[ \begin {cases} \frac {9 a^{2} \left (a + b x^{3}\right )^{\frac {2}{3}}}{40 b^{3}} - \frac {3 a x^{3} \left (a + b x^{3}\right )^{\frac {2}{3}}}{20 b^{2}} + \frac {x^{6} \left (a + b x^{3}\right )^{\frac {2}{3}}}{8 b} & \text {for}\: b \neq 0 \\\frac {x^{9}}{9 \sqrt [3]{a}} & \text {otherwise} \end {cases} \]
Verification of antiderivative is not currently implemented for this CAS.
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