Optimal. Leaf size=50 \[ -\frac {a^2}{2 x^2}-\frac {b^2 x^{-2 (1-n)}}{2 (1-n)}-\frac {2 a b x^{-2+n}}{2-n} \]
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Rubi [A]
time = 0.02, antiderivative size = 50, normalized size of antiderivative = 1.00, 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 = {276}
\begin {gather*} -\frac {a^2}{2 x^2}-\frac {2 a b x^{n-2}}{2-n}-\frac {b^2 x^{-2 (1-n)}}{2 (1-n)} \end {gather*}
Antiderivative was successfully verified.
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Rule 276
Rubi steps
\begin {align*} \int \frac {\left (a+b x^n\right )^2}{x^3} \, dx &=\int \left (\frac {a^2}{x^3}+2 a b x^{-3+n}+b^2 x^{-3+2 n}\right ) \, dx\\ &=-\frac {a^2}{2 x^2}-\frac {b^2 x^{-2 (1-n)}}{2 (1-n)}-\frac {2 a b x^{-2+n}}{2-n}\\ \end {align*}
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Mathematica [A]
time = 0.05, size = 39, normalized size = 0.78 \begin {gather*} \frac {-a^2+\frac {4 a b x^n}{-2+n}+\frac {b^2 x^{2 n}}{-1+n}}{2 x^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.20, size = 42, normalized size = 0.84
method | result | size |
norman | \(\frac {-\frac {a^{2}}{2}+\frac {b^{2} {\mathrm e}^{2 n \ln \left (x \right )}}{-2+2 n}+\frac {2 a b \,{\mathrm e}^{n \ln \left (x \right )}}{-2+n}}{x^{2}}\) | \(42\) |
risch | \(-\frac {a^{2}}{2 x^{2}}+\frac {b^{2} x^{2 n}}{2 \left (-1+n \right ) x^{2}}+\frac {2 a b \,x^{n}}{\left (-2+n \right ) x^{2}}\) | \(43\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: ValueError} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.45, size = 66, normalized size = 1.32 \begin {gather*} -\frac {a^{2} n^{2} - 3 \, a^{2} n + 2 \, a^{2} - {\left (b^{2} n - 2 \, b^{2}\right )} x^{2 \, n} - 4 \, {\left (a b n - a b\right )} x^{n}}{2 \, {\left (n^{2} - 3 \, n + 2\right )} x^{2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 245 vs.
\(2 (37) = 74\).
time = 0.25, size = 245, normalized size = 4.90 \begin {gather*} \begin {cases} - \frac {a^{2}}{2 x^{2}} - \frac {2 a b}{x} + b^{2} \log {\left (x \right )} & \text {for}\: n = 1 \\- \frac {a^{2}}{2 x^{2}} + 2 a b \log {\left (x \right )} + \frac {b^{2} x^{2}}{2} & \text {for}\: n = 2 \\- \frac {a^{2} n^{2}}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} + \frac {3 a^{2} n}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} - \frac {2 a^{2}}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} + \frac {4 a b n x^{n}}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} - \frac {4 a b x^{n}}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} + \frac {b^{2} n x^{2 n}}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} - \frac {2 b^{2} x^{2 n}}{2 n^{2} x^{2} - 6 n x^{2} + 4 x^{2}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.15, size = 43, normalized size = 0.86 \begin {gather*} \frac {b^2\,x^{2\,n}}{x^2\,\left (2\,n-2\right )}-\frac {a^2}{2\,x^2}+\frac {2\,a\,b\,x^n}{x^2\,\left (n-2\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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