Integrand size = 17, antiderivative size = 83 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=-\frac {a^5 x^{-n}}{n}+\frac {10 a^3 b^2 x^n}{n}+\frac {5 a^2 b^3 x^{2 n}}{n}+\frac {5 a b^4 x^{3 n}}{3 n}+\frac {b^5 x^{4 n}}{4 n}+5 a^4 b \log (x) \]
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Time = 0.02 (sec) , antiderivative size = 83, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.118, Rules used = {272, 45} \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=-\frac {a^5 x^{-n}}{n}+5 a^4 b \log (x)+\frac {10 a^3 b^2 x^n}{n}+\frac {5 a^2 b^3 x^{2 n}}{n}+\frac {5 a b^4 x^{3 n}}{3 n}+\frac {b^5 x^{4 n}}{4 n} \]
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Rule 45
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int \frac {(a+b x)^5}{x^2} \, dx,x,x^n\right )}{n} \\ & = \frac {\text {Subst}\left (\int \left (10 a^3 b^2+\frac {a^5}{x^2}+\frac {5 a^4 b}{x}+10 a^2 b^3 x+5 a b^4 x^2+b^5 x^3\right ) \, dx,x,x^n\right )}{n} \\ & = -\frac {a^5 x^{-n}}{n}+\frac {10 a^3 b^2 x^n}{n}+\frac {5 a^2 b^3 x^{2 n}}{n}+\frac {5 a b^4 x^{3 n}}{3 n}+\frac {b^5 x^{4 n}}{4 n}+5 a^4 b \log (x) \\ \end{align*}
Time = 0.06 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.88 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=-\frac {12 a^5 x^{-n}-120 a^3 b^2 x^n-60 a^2 b^3 x^{2 n}-20 a b^4 x^{3 n}-3 b^5 x^{4 n}-60 a^4 b \log \left (x^n\right )}{12 n} \]
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Time = 3.82 (sec) , antiderivative size = 80, normalized size of antiderivative = 0.96
method | result | size |
risch | \(5 a^{4} b \ln \left (x \right )+\frac {b^{5} x^{4 n}}{4 n}+\frac {5 a \,b^{4} x^{3 n}}{3 n}+\frac {5 a^{2} b^{3} x^{2 n}}{n}+\frac {10 a^{3} b^{2} x^{n}}{n}-\frac {a^{5} x^{-n}}{n}\) | \(80\) |
norman | \(\left (5 a^{4} b \ln \left (x \right ) {\mathrm e}^{n \ln \left (x \right )}-\frac {a^{5}}{n}+\frac {b^{5} {\mathrm e}^{5 n \ln \left (x \right )}}{4 n}+\frac {5 a \,b^{4} {\mathrm e}^{4 n \ln \left (x \right )}}{3 n}+\frac {5 a^{2} b^{3} {\mathrm e}^{3 n \ln \left (x \right )}}{n}+\frac {10 a^{3} b^{2} {\mathrm e}^{2 n \ln \left (x \right )}}{n}\right ) {\mathrm e}^{-n \ln \left (x \right )}\) | \(98\) |
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Time = 0.27 (sec) , antiderivative size = 75, normalized size of antiderivative = 0.90 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=\frac {60 \, a^{4} b n x^{n} \log \left (x\right ) + 3 \, b^{5} x^{5 \, n} + 20 \, a b^{4} x^{4 \, n} + 60 \, a^{2} b^{3} x^{3 \, n} + 120 \, a^{3} b^{2} x^{2 \, n} - 12 \, a^{5}}{12 \, n x^{n}} \]
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Time = 1.70 (sec) , antiderivative size = 82, normalized size of antiderivative = 0.99 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=\begin {cases} - \frac {a^{5} x^{- n}}{n} + 5 a^{4} b \log {\left (x \right )} + \frac {10 a^{3} b^{2} x^{n}}{n} + \frac {5 a^{2} b^{3} x^{2 n}}{n} + \frac {5 a b^{4} x^{3 n}}{3 n} + \frac {b^{5} x^{4 n}}{4 n} & \text {for}\: n \neq 0 \\\left (a + b\right )^{5} \log {\left (x \right )} & \text {otherwise} \end {cases} \]
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Time = 0.20 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.95 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=5 \, a^{4} b \log \left (x\right ) + \frac {b^{5} x^{4 \, n}}{4 \, n} + \frac {5 \, a b^{4} x^{3 \, n}}{3 \, n} + \frac {5 \, a^{2} b^{3} x^{2 \, n}}{n} + \frac {10 \, a^{3} b^{2} x^{n}}{n} - \frac {a^{5}}{n x^{n}} \]
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Time = 0.29 (sec) , antiderivative size = 75, normalized size of antiderivative = 0.90 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=\frac {60 \, a^{4} b n x^{n} \log \left (x\right ) + 3 \, b^{5} x^{5 \, n} + 20 \, a b^{4} x^{4 \, n} + 60 \, a^{2} b^{3} x^{3 \, n} + 120 \, a^{3} b^{2} x^{2 \, n} - 12 \, a^{5}}{12 \, n x^{n}} \]
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Time = 6.02 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.95 \[ \int x^{-1-n} \left (a+b x^n\right )^5 \, dx=5\,a^4\,b\,\ln \left (x\right )-\frac {a^5}{n\,x^n}+\frac {b^5\,x^{4\,n}}{4\,n}+\frac {5\,a^2\,b^3\,x^{2\,n}}{n}+\frac {5\,a\,b^4\,x^{3\,n}}{3\,n}+\frac {10\,a^3\,b^2\,x^n}{n} \]
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