Optimal. Leaf size=48 \[ \frac{x^{-3 n-1} \left (a x^2+b x^3\right )^{n+1} \, _2F_1\left (1,2;2-n;-\frac{b x}{a}\right )}{a (1-n)} \]
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Rubi [A] time = 0.0371099, antiderivative size = 61, normalized size of antiderivative = 1.27, number of steps used = 3, number of rules used = 3, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.158, Rules used = {2032, 66, 64} \[ \frac{x^{1-3 n} \left (\frac{b x}{a}+1\right )^{-n} \left (a x^2+b x^3\right )^n \, _2F_1\left (1-n,-n;2-n;-\frac{b x}{a}\right )}{1-n} \]
Antiderivative was successfully verified.
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Rule 2032
Rule 66
Rule 64
Rubi steps
\begin{align*} \int x^{-3 n} \left (a x^2+b x^3\right )^n \, dx &=\left (x^{-2 n} (a+b x)^{-n} \left (a x^2+b x^3\right )^n\right ) \int x^{-n} (a+b x)^n \, dx\\ &=\left (x^{-2 n} \left (1+\frac{b x}{a}\right )^{-n} \left (a x^2+b x^3\right )^n\right ) \int x^{-n} \left (1+\frac{b x}{a}\right )^n \, dx\\ &=\frac{x^{1-3 n} \left (1+\frac{b x}{a}\right )^{-n} \left (a x^2+b x^3\right )^n \, _2F_1\left (1-n,-n;2-n;-\frac{b x}{a}\right )}{1-n}\\ \end{align*}
Mathematica [A] time = 0.012427, size = 59, normalized size = 1.23 \[ \frac{x^{1-3 n} \left (x^2 (a+b x)\right )^n \left (\frac{b x}{a}+1\right )^{-n} \, _2F_1\left (1-n,-n;2-n;-\frac{b x}{a}\right )}{1-n} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.252, size = 0, normalized size = 0. \begin{align*} \int{\frac{ \left ( b{x}^{3}+a{x}^{2} \right ) ^{n}}{{x}^{3\,n}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{{\left (b x^{3} + a x^{2}\right )}^{n}}{x^{3 \, n}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{{\left (b x^{3} + a x^{2}\right )}^{n}}{x^{3 \, n}}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{- 3 n} \left (x^{2} \left (a + b x\right )\right )^{n}\, dx \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 \frac{{\left (b x^{3} + a x^{2}\right )}^{n}}{x^{3 \, n}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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