Integrand size = 16, antiderivative size = 22 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\frac {\left (a+b \log \left (c x^n\right )\right )^4}{4 b n} \]
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Time = 0.01 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {2339, 30} \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\frac {\left (a+b \log \left (c x^n\right )\right )^4}{4 b n} \]
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Rule 30
Rule 2339
Rubi steps \begin{align*} \text {integral}& = \frac {\text {Subst}\left (\int x^3 \, dx,x,a+b \log \left (c x^n\right )\right )}{b n} \\ & = \frac {\left (a+b \log \left (c x^n\right )\right )^4}{4 b n} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.00 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\frac {\left (a+b \log \left (c x^n\right )\right )^4}{4 b n} \]
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Time = 0.38 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.95
method | result | size |
derivativedivides | \(\frac {{\left (a +b \ln \left (c \,x^{n}\right )\right )}^{4}}{4 b n}\) | \(21\) |
default | \(\frac {{\left (a +b \ln \left (c \,x^{n}\right )\right )}^{4}}{4 b n}\) | \(21\) |
parallelrisch | \(\frac {b^{3} \ln \left (c \,x^{n}\right )^{4}+4 a \,b^{2} \ln \left (c \,x^{n}\right )^{3}+4 \ln \left (x \right ) a^{3} n +6 a^{2} b \ln \left (c \,x^{n}\right )^{2}}{4 n}\) | \(55\) |
parts | \(\ln \left (x \right ) a^{3}+\frac {b^{3} \ln \left (c \,x^{n}\right )^{4}}{4 n}+\frac {a \,b^{2} \ln \left (c \,x^{n}\right )^{3}}{n}+\frac {3 a^{2} b \ln \left (c \,x^{n}\right )^{2}}{2 n}\) | \(57\) |
risch | \(\text {Expression too large to display}\) | \(2945\) |
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Leaf count of result is larger than twice the leaf count of optimal. 100 vs. \(2 (20) = 40\).
Time = 0.29 (sec) , antiderivative size = 100, normalized size of antiderivative = 4.55 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\frac {1}{4} \, b^{3} n^{3} \log \left (x\right )^{4} + {\left (b^{3} n^{2} \log \left (c\right ) + a b^{2} n^{2}\right )} \log \left (x\right )^{3} + \frac {3}{2} \, {\left (b^{3} n \log \left (c\right )^{2} + 2 \, a b^{2} n \log \left (c\right ) + a^{2} b n\right )} \log \left (x\right )^{2} + {\left (b^{3} \log \left (c\right )^{3} + 3 \, a b^{2} \log \left (c\right )^{2} + 3 \, a^{2} b \log \left (c\right ) + a^{3}\right )} \log \left (x\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 92 vs. \(2 (15) = 30\).
Time = 7.27 (sec) , antiderivative size = 92, normalized size of antiderivative = 4.18 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\begin {cases} \frac {a^{3} \log {\left (c x^{n} \right )} + \frac {3 a^{2} b \log {\left (c x^{n} \right )}^{2}}{2} + a b^{2} \log {\left (c x^{n} \right )}^{3} + \frac {b^{3} \log {\left (c x^{n} \right )}^{4}}{4}}{n} & \text {for}\: n \neq 0 \\\left (a^{3} + 3 a^{2} b \log {\left (c \right )} + 3 a b^{2} \log {\left (c \right )}^{2} + b^{3} \log {\left (c \right )}^{3}\right ) \log {\left (x \right )} & \text {otherwise} \end {cases} \]
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none
Time = 0.18 (sec) , antiderivative size = 20, normalized size of antiderivative = 0.91 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\frac {{\left (b \log \left (c x^{n}\right ) + a\right )}^{4}}{4 \, b n} \]
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Leaf count of result is larger than twice the leaf count of optimal. 114 vs. \(2 (20) = 40\).
Time = 0.32 (sec) , antiderivative size = 114, normalized size of antiderivative = 5.18 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=\frac {1}{4} \, b^{3} n^{3} \log \left (x\right )^{4} + b^{3} n^{2} \log \left (c\right ) \log \left (x\right )^{3} + \frac {3}{2} \, b^{3} n \log \left (c\right )^{2} \log \left (x\right )^{2} + a b^{2} n^{2} \log \left (x\right )^{3} + b^{3} \log \left (c\right )^{3} \log \left (x\right ) + 3 \, a b^{2} n \log \left (c\right ) \log \left (x\right )^{2} + 3 \, a b^{2} \log \left (c\right )^{2} \log \left (x\right ) + \frac {3}{2} \, a^{2} b n \log \left (x\right )^{2} + 3 \, a^{2} b \log \left (c\right ) \log \left (x\right ) + a^{3} \log \left (x\right ) \]
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Time = 0.31 (sec) , antiderivative size = 56, normalized size of antiderivative = 2.55 \[ \int \frac {\left (a+b \log \left (c x^n\right )\right )^3}{x} \, dx=a^3\,\ln \left (x\right )+\frac {b^3\,{\ln \left (c\,x^n\right )}^4}{4\,n}+\frac {3\,a^2\,b\,{\ln \left (c\,x^n\right )}^2}{2\,n}+\frac {a\,b^2\,{\ln \left (c\,x^n\right )}^3}{n} \]
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