Integrand size = 12, antiderivative size = 43 \[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=-\frac {\sqrt {\pi } x \left (a x^n\right )^{-1/n} \text {erf}\left (\frac {\sqrt {-\log \left (a x^n\right )}}{\sqrt {n}}\right )}{\sqrt {n}} \]
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Time = 0.02 (sec) , antiderivative size = 43, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {2337, 2211, 2236} \[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=-\frac {\sqrt {\pi } x \left (a x^n\right )^{-1/n} \text {erf}\left (\frac {\sqrt {-\log \left (a x^n\right )}}{\sqrt {n}}\right )}{\sqrt {n}} \]
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Rule 2211
Rule 2236
Rule 2337
Rubi steps \begin{align*} \text {integral}& = \frac {\left (x \left (a x^n\right )^{-1/n}\right ) \text {Subst}\left (\int \frac {e^{\frac {x}{n}}}{\sqrt {-x}} \, dx,x,\log \left (a x^n\right )\right )}{n} \\ & = -\frac {\left (2 x \left (a x^n\right )^{-1/n}\right ) \text {Subst}\left (\int e^{-\frac {x^2}{n}} \, dx,x,\sqrt {-\log \left (a x^n\right )}\right )}{n} \\ & = -\frac {\sqrt {\pi } x \left (a x^n\right )^{-1/n} \text {erf}\left (\frac {\sqrt {-\log \left (a x^n\right )}}{\sqrt {n}}\right )}{\sqrt {n}} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.44 \[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=\frac {\sqrt {\pi } x \left (a x^n\right )^{-1/n} \text {erfi}\left (\frac {\sqrt {\log \left (a x^n\right )}}{\sqrt {n}}\right ) \sqrt {\log \left (a x^n\right )}}{\sqrt {n} \sqrt {-\log \left (a x^n\right )}} \]
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\[\int \frac {1}{\sqrt {-\ln \left (a \,x^{n}\right )}}d x\]
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Exception generated. \[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=\text {Exception raised: TypeError} \]
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\[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=\int \frac {1}{\sqrt {- \log {\left (a x^{n} \right )}}}\, dx \]
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\[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=\int { \frac {1}{\sqrt {-\log \left (a x^{n}\right )}} \,d x } \]
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none
Time = 0.33 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.74 \[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=\frac {\sqrt {\pi } \operatorname {erf}\left (-\frac {\sqrt {-n \log \left (x\right ) - \log \left (a\right )}}{\sqrt {n}}\right )}{a^{\left (\frac {1}{n}\right )} \sqrt {n}} \]
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Timed out. \[ \int \frac {1}{\sqrt {-\log \left (a x^n\right )}} \, dx=\int \frac {1}{\sqrt {-\ln \left (a\,x^n\right )}} \,d x \]
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