Optimal. Leaf size=95 \[ \frac{21}{13} a^2 b^5 x^{13}+\frac{35}{12} a^3 b^4 x^{12}+\frac{35}{11} a^4 b^3 x^{11}+\frac{21}{10} a^5 b^2 x^{10}+\frac{7}{9} a^6 b x^9+\frac{a^7 x^8}{8}+\frac{1}{2} a b^6 x^{14}+\frac{b^7 x^{15}}{15} \]
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Rubi [A] time = 0.0396834, antiderivative size = 95, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 1, integrand size = 11, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.091, Rules used = {43} \[ \frac{21}{13} a^2 b^5 x^{13}+\frac{35}{12} a^3 b^4 x^{12}+\frac{35}{11} a^4 b^3 x^{11}+\frac{21}{10} a^5 b^2 x^{10}+\frac{7}{9} a^6 b x^9+\frac{a^7 x^8}{8}+\frac{1}{2} a b^6 x^{14}+\frac{b^7 x^{15}}{15} \]
Antiderivative was successfully verified.
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Rule 43
Rubi steps
\begin{align*} \int x^7 (a+b x)^7 \, dx &=\int \left (a^7 x^7+7 a^6 b x^8+21 a^5 b^2 x^9+35 a^4 b^3 x^{10}+35 a^3 b^4 x^{11}+21 a^2 b^5 x^{12}+7 a b^6 x^{13}+b^7 x^{14}\right ) \, dx\\ &=\frac{a^7 x^8}{8}+\frac{7}{9} a^6 b x^9+\frac{21}{10} a^5 b^2 x^{10}+\frac{35}{11} a^4 b^3 x^{11}+\frac{35}{12} a^3 b^4 x^{12}+\frac{21}{13} a^2 b^5 x^{13}+\frac{1}{2} a b^6 x^{14}+\frac{b^7 x^{15}}{15}\\ \end{align*}
Mathematica [A] time = 0.0042165, size = 95, normalized size = 1. \[ \frac{21}{13} a^2 b^5 x^{13}+\frac{35}{12} a^3 b^4 x^{12}+\frac{35}{11} a^4 b^3 x^{11}+\frac{21}{10} a^5 b^2 x^{10}+\frac{7}{9} a^6 b x^9+\frac{a^7 x^8}{8}+\frac{1}{2} a b^6 x^{14}+\frac{b^7 x^{15}}{15} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.002, size = 80, normalized size = 0.8 \begin{align*}{\frac{{a}^{7}{x}^{8}}{8}}+{\frac{7\,{a}^{6}b{x}^{9}}{9}}+{\frac{21\,{a}^{5}{b}^{2}{x}^{10}}{10}}+{\frac{35\,{a}^{4}{b}^{3}{x}^{11}}{11}}+{\frac{35\,{a}^{3}{b}^{4}{x}^{12}}{12}}+{\frac{21\,{a}^{2}{b}^{5}{x}^{13}}{13}}+{\frac{a{b}^{6}{x}^{14}}{2}}+{\frac{{b}^{7}{x}^{15}}{15}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.03137, size = 107, normalized size = 1.13 \begin{align*} \frac{1}{15} \, b^{7} x^{15} + \frac{1}{2} \, a b^{6} x^{14} + \frac{21}{13} \, a^{2} b^{5} x^{13} + \frac{35}{12} \, a^{3} b^{4} x^{12} + \frac{35}{11} \, a^{4} b^{3} x^{11} + \frac{21}{10} \, a^{5} b^{2} x^{10} + \frac{7}{9} \, a^{6} b x^{9} + \frac{1}{8} \, a^{7} x^{8} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.29183, size = 197, normalized size = 2.07 \begin{align*} \frac{1}{15} x^{15} b^{7} + \frac{1}{2} x^{14} b^{6} a + \frac{21}{13} x^{13} b^{5} a^{2} + \frac{35}{12} x^{12} b^{4} a^{3} + \frac{35}{11} x^{11} b^{3} a^{4} + \frac{21}{10} x^{10} b^{2} a^{5} + \frac{7}{9} x^{9} b a^{6} + \frac{1}{8} x^{8} a^{7} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.087307, size = 92, normalized size = 0.97 \begin{align*} \frac{a^{7} x^{8}}{8} + \frac{7 a^{6} b x^{9}}{9} + \frac{21 a^{5} b^{2} x^{10}}{10} + \frac{35 a^{4} b^{3} x^{11}}{11} + \frac{35 a^{3} b^{4} x^{12}}{12} + \frac{21 a^{2} b^{5} x^{13}}{13} + \frac{a b^{6} x^{14}}{2} + \frac{b^{7} x^{15}}{15} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.18826, size = 107, normalized size = 1.13 \begin{align*} \frac{1}{15} \, b^{7} x^{15} + \frac{1}{2} \, a b^{6} x^{14} + \frac{21}{13} \, a^{2} b^{5} x^{13} + \frac{35}{12} \, a^{3} b^{4} x^{12} + \frac{35}{11} \, a^{4} b^{3} x^{11} + \frac{21}{10} \, a^{5} b^{2} x^{10} + \frac{7}{9} \, a^{6} b x^{9} + \frac{1}{8} \, a^{7} x^{8} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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