Optimal. Leaf size=45 \[ \frac{a^2 x^{3 n}}{3 n}+\frac{a b x^{4 n}}{2 n}+\frac{b^2 x^{5 n}}{5 n} \]
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Rubi [A] time = 0.0170564, antiderivative size = 45, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 17, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.118, Rules used = {266, 43} \[ \frac{a^2 x^{3 n}}{3 n}+\frac{a b x^{4 n}}{2 n}+\frac{b^2 x^{5 n}}{5 n} \]
Antiderivative was successfully verified.
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Rule 266
Rule 43
Rubi steps
\begin{align*} \int x^{-1+3 n} \left (a+b x^n\right )^2 \, dx &=\frac{\operatorname{Subst}\left (\int x^2 (a+b x)^2 \, dx,x,x^n\right )}{n}\\ &=\frac{\operatorname{Subst}\left (\int \left (a^2 x^2+2 a b x^3+b^2 x^4\right ) \, dx,x,x^n\right )}{n}\\ &=\frac{a^2 x^{3 n}}{3 n}+\frac{a b x^{4 n}}{2 n}+\frac{b^2 x^{5 n}}{5 n}\\ \end{align*}
Mathematica [A] time = 0.0148958, size = 35, normalized size = 0.78 \[ \frac{x^{3 n} \left (10 a^2+15 a b x^n+6 b^2 x^{2 n}\right )}{30 n} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.015, size = 46, normalized size = 1. \begin{align*}{\frac{{a}^{2} \left ({{\rm e}^{n\ln \left ( x \right ) }} \right ) ^{3}}{3\,n}}+{\frac{{b}^{2} \left ({{\rm e}^{n\ln \left ( x \right ) }} \right ) ^{5}}{5\,n}}+{\frac{ab \left ({{\rm e}^{n\ln \left ( x \right ) }} \right ) ^{4}}{2\,n}} \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 [A] time = 1.03498, size = 78, normalized size = 1.73 \begin{align*} \frac{6 \, b^{2} x^{5 \, n} + 15 \, a b x^{4 \, n} + 10 \, a^{2} x^{3 \, n}}{30 \, n} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 11.1792, size = 42, normalized size = 0.93 \begin{align*} \begin{cases} \frac{a^{2} x^{3 n}}{3 n} + \frac{a b x^{4 n}}{2 n} + \frac{b^{2} x^{5 n}}{5 n} & \text{for}\: n \neq 0 \\\left (a + b\right )^{2} \log{\left (x \right )} & \text{otherwise} \end{cases} \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^{n} + a\right )}^{2} x^{3 \, n - 1}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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