Integrand size = 8, antiderivative size = 12 \[ \int \frac {\log ^n(x)}{x} \, dx=\frac {\log ^{1+n}(x)}{1+n} \]
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Time = 0.01 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {2339, 30} \[ \int \frac {\log ^n(x)}{x} \, dx=\frac {\log ^{n+1}(x)}{n+1} \]
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Rule 30
Rule 2339
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int x^n \, dx,x,\log (x)\right ) \\ & = \frac {\log ^{1+n}(x)}{1+n} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00 \[ \int \frac {\log ^n(x)}{x} \, dx=\frac {\log ^{1+n}(x)}{1+n} \]
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Time = 0.04 (sec) , antiderivative size = 13, normalized size of antiderivative = 1.08
method | result | size |
derivativedivides | \(\frac {\ln \left (x \right )^{1+n}}{1+n}\) | \(13\) |
default | \(\frac {\ln \left (x \right )^{1+n}}{1+n}\) | \(13\) |
risch | \(\frac {\ln \left (x \right ) \ln \left (x \right )^{n}}{1+n}\) | \(13\) |
norman | \(\frac {\ln \left (x \right ) {\mathrm e}^{n \ln \left (\ln \left (x \right )\right )}}{1+n}\) | \(15\) |
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none
Time = 0.25 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00 \[ \int \frac {\log ^n(x)}{x} \, dx=\frac {\log \left (x\right )^{n} \log \left (x\right )}{n + 1} \]
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Time = 0.37 (sec) , antiderivative size = 15, normalized size of antiderivative = 1.25 \[ \int \frac {\log ^n(x)}{x} \, dx=\begin {cases} \frac {\log {\left (x \right )}^{n + 1}}{n + 1} & \text {for}\: n \neq -1 \\\log {\left (\log {\left (x \right )} \right )} & \text {otherwise} \end {cases} \]
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none
Time = 0.19 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00 \[ \int \frac {\log ^n(x)}{x} \, dx=\frac {\log \left (x\right )^{n + 1}}{n + 1} \]
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none
Time = 0.31 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00 \[ \int \frac {\log ^n(x)}{x} \, dx=\frac {\log \left (x\right )^{n + 1}}{n + 1} \]
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Time = 0.38 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.83 \[ \int \frac {\log ^n(x)}{x} \, dx=\left \{\begin {array}{cl} \ln \left (\ln \left (x\right )\right ) & \text {\ if\ \ }n=-1\\ \frac {{\ln \left (x\right )}^{n+1}}{n+1} & \text {\ if\ \ }n\neq -1 \end {array}\right . \]
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