Optimal. Leaf size=33 \[ \frac{1}{5} x^5 (a B+A b)+\frac{1}{4} a A x^4+\frac{1}{6} b B x^6 \]
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Rubi [A] time = 0.0258505, antiderivative size = 33, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 1, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.071, Rules used = {76} \[ \frac{1}{5} x^5 (a B+A b)+\frac{1}{4} a A x^4+\frac{1}{6} b B x^6 \]
Antiderivative was successfully verified.
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Rule 76
Rubi steps
\begin{align*} \int x^3 (a+b x) (A+B x) \, dx &=\int \left (a A x^3+(A b+a B) x^4+b B x^5\right ) \, dx\\ &=\frac{1}{4} a A x^4+\frac{1}{5} (A b+a B) x^5+\frac{1}{6} b B x^6\\ \end{align*}
Mathematica [A] time = 0.0045112, size = 33, normalized size = 1. \[ \frac{1}{5} x^5 (a B+A b)+\frac{1}{4} a A x^4+\frac{1}{6} b B x^6 \]
Antiderivative was successfully verified.
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Maple [A] time = 0., size = 28, normalized size = 0.9 \begin{align*}{\frac{aA{x}^{4}}{4}}+{\frac{ \left ( Ab+Ba \right ){x}^{5}}{5}}+{\frac{bB{x}^{6}}{6}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.0315, size = 36, normalized size = 1.09 \begin{align*} \frac{1}{6} \, B b x^{6} + \frac{1}{4} \, A a x^{4} + \frac{1}{5} \,{\left (B a + A b\right )} x^{5} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.70358, size = 74, normalized size = 2.24 \begin{align*} \frac{1}{6} x^{6} b B + \frac{1}{5} x^{5} a B + \frac{1}{5} x^{5} b A + \frac{1}{4} x^{4} a A \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.065399, size = 29, normalized size = 0.88 \begin{align*} \frac{A a x^{4}}{4} + \frac{B b x^{6}}{6} + x^{5} \left (\frac{A b}{5} + \frac{B a}{5}\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.1657, size = 39, normalized size = 1.18 \begin{align*} \frac{1}{6} \, B b x^{6} + \frac{1}{5} \, B a x^{5} + \frac{1}{5} \, A b x^{5} + \frac{1}{4} \, A a x^{4} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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