Optimal. Leaf size=72 \[ -\frac{3 a^2 b x^{n-2}}{2-n}-\frac{a^3}{2 x^2}-\frac{3 a b^2 x^{-2 (1-n)}}{2 (1-n)}-\frac{b^3 x^{3 n-2}}{2-3 n} \]
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Rubi [A] time = 0.033153, antiderivative size = 72, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 1, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.077, Rules used = {270} \[ -\frac{3 a^2 b x^{n-2}}{2-n}-\frac{a^3}{2 x^2}-\frac{3 a b^2 x^{-2 (1-n)}}{2 (1-n)}-\frac{b^3 x^{3 n-2}}{2-3 n} \]
Antiderivative was successfully verified.
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Rule 270
Rubi steps
\begin{align*} \int \frac{\left (a+b x^n\right )^3}{x^3} \, dx &=\int \left (\frac{a^3}{x^3}+3 a^2 b x^{-3+n}+b^3 x^{3 (-1+n)}+3 a b^2 x^{-3+2 n}\right ) \, dx\\ &=-\frac{a^3}{2 x^2}-\frac{3 a b^2 x^{-2 (1-n)}}{2 (1-n)}-\frac{3 a^2 b x^{-2+n}}{2-n}-\frac{b^3 x^{-2+3 n}}{2-3 n}\\ \end{align*}
Mathematica [A] time = 0.0492128, size = 60, normalized size = 0.83 \[ \frac{\frac{6 a^2 b x^n}{n-2}-a^3+\frac{3 a b^2 x^{2 n}}{n-1}+\frac{2 b^3 x^{3 n}}{3 n-2}}{2 x^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.017, size = 65, normalized size = 0.9 \begin{align*} -{\frac{{a}^{3}}{2\,{x}^{2}}}+{\frac{{b}^{3} \left ({x}^{n} \right ) ^{3}}{ \left ( -2+3\,n \right ){x}^{2}}}+{\frac{3\,{b}^{2}a \left ({x}^{n} \right ) ^{2}}{ \left ( 2\,n-2 \right ){x}^{2}}}+3\,{\frac{b{a}^{2}{x}^{n}}{ \left ( -2+n \right ){x}^{2}}} \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 [B] time = 1.05201, size = 292, normalized size = 4.06 \begin{align*} -\frac{3 \, a^{3} n^{3} - 11 \, a^{3} n^{2} + 12 \, a^{3} n - 4 \, a^{3} - 2 \,{\left (b^{3} n^{2} - 3 \, b^{3} n + 2 \, b^{3}\right )} x^{3 \, n} - 3 \,{\left (3 \, a b^{2} n^{2} - 8 \, a b^{2} n + 4 \, a b^{2}\right )} x^{2 \, n} - 6 \,{\left (3 \, a^{2} b n^{2} - 5 \, a^{2} b n + 2 \, a^{2} b\right )} x^{n}}{2 \,{\left (3 \, n^{3} - 11 \, n^{2} + 12 \, n - 4\right )} x^{2}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 2.12014, size = 627, normalized size = 8.71 \begin{align*} \begin{cases} - \frac{a^{3}}{2 x^{2}} - \frac{9 a^{2} b}{4 x^{\frac{4}{3}}} - \frac{9 a b^{2}}{2 x^{\frac{2}{3}}} + b^{3} \log{\left (x \right )} & \text{for}\: n = \frac{2}{3} \\- \frac{a^{3}}{2 x^{2}} - \frac{3 a^{2} b}{x} + 3 a b^{2} \log{\left (x \right )} + b^{3} x & \text{for}\: n = 1 \\- \frac{a^{3}}{2 x^{2}} + 3 a^{2} b \log{\left (x \right )} + \frac{3 a b^{2} x^{2}}{2} + \frac{b^{3} x^{4}}{4} & \text{for}\: n = 2 \\- \frac{3 a^{3} n^{3}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{11 a^{3} n^{2}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} - \frac{12 a^{3} n}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{4 a^{3}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{18 a^{2} b n^{2} x^{n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} - \frac{30 a^{2} b n x^{n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{12 a^{2} b x^{n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{9 a b^{2} n^{2} x^{2 n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} - \frac{24 a b^{2} n x^{2 n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{12 a b^{2} x^{2 n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{2 b^{3} n^{2} x^{3 n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} - \frac{6 b^{3} n x^{3 n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} + \frac{4 b^{3} x^{3 n}}{6 n^{3} x^{2} - 22 n^{2} x^{2} + 24 n x^{2} - 8 x^{2}} & \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 \frac{{\left (b x^{n} + a\right )}^{3}}{x^{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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