Integrand size = 15, antiderivative size = 27 \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\frac {a x^{4 n}}{4 n}+\frac {b x^{5 n}}{5 n} \]
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Time = 0.01 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.067, Rules used = {14} \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\frac {a x^{4 n}}{4 n}+\frac {b x^{5 n}}{5 n} \]
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Rule 14
Rubi steps \begin{align*} \text {integral}& = \int \left (a x^{-1+4 n}+b x^{-1+5 n}\right ) \, dx \\ & = \frac {a x^{4 n}}{4 n}+\frac {b x^{5 n}}{5 n} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.81 \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\frac {x^{4 n} \left (5 a+4 b x^n\right )}{20 n} \]
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Time = 0.04 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.89
method | result | size |
risch | \(\frac {a \,x^{4 n}}{4 n}+\frac {b \,x^{5 n}}{5 n}\) | \(24\) |
norman | \(\frac {a \,{\mathrm e}^{4 n \ln \left (x \right )}}{4 n}+\frac {b \,{\mathrm e}^{5 n \ln \left (x \right )}}{5 n}\) | \(28\) |
parallelrisch | \(\frac {4 x \,x^{n} x^{-1+4 n} b +5 x \,x^{-1+4 n} a}{20 n}\) | \(32\) |
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Time = 0.29 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.81 \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\frac {4 \, b x^{5 \, n} + 5 \, a x^{4 \, n}}{20 \, n} \]
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Time = 0.16 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.33 \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\begin {cases} \frac {a x x^{4 n - 1}}{4 n} + \frac {b x x^{n} x^{4 n - 1}}{5 n} & \text {for}\: n \neq 0 \\\left (a + b\right ) \log {\left (x \right )} & \text {otherwise} \end {cases} \]
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Time = 0.25 (sec) , antiderivative size = 23, normalized size of antiderivative = 0.85 \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\frac {b x^{5 \, n}}{5 \, n} + \frac {a x^{4 \, n}}{4 \, n} \]
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\[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\int { {\left (b x^{n} + a\right )} x^{4 \, n - 1} \,d x } \]
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Time = 5.81 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.74 \[ \int x^{-1+4 n} \left (a+b x^n\right ) \, dx=\frac {x^{4\,n}\,\left (5\,a+4\,b\,x^n\right )}{20\,n} \]
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