Optimal. Leaf size=47 \[ \frac{i \text{PolyLog}\left (2,\frac{i x^{-n}}{a}\right )}{2 n}-\frac{i \text{PolyLog}\left (2,-\frac{i x^{-n}}{a}\right )}{2 n} \]
[Out]
________________________________________________________________________________________
Rubi [A] time = 0.0351754, antiderivative size = 47, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 10, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.3, Rules used = {5032, 4849, 2391} \[ \frac{i \text{PolyLog}\left (2,\frac{i x^{-n}}{a}\right )}{2 n}-\frac{i \text{PolyLog}\left (2,-\frac{i x^{-n}}{a}\right )}{2 n} \]
Antiderivative was successfully verified.
[In]
[Out]
Rule 5032
Rule 4849
Rule 2391
Rubi steps
\begin{align*} \int \frac{\cot ^{-1}\left (a x^n\right )}{x} \, dx &=\frac{\operatorname{Subst}\left (\int \frac{\cot ^{-1}(a x)}{x} \, dx,x,x^n\right )}{n}\\ &=\frac{i \operatorname{Subst}\left (\int \frac{\log \left (1-\frac{i}{a x}\right )}{x} \, dx,x,x^n\right )}{2 n}-\frac{i \operatorname{Subst}\left (\int \frac{\log \left (1+\frac{i}{a x}\right )}{x} \, dx,x,x^n\right )}{2 n}\\ &=-\frac{i \text{Li}_2\left (-\frac{i x^{-n}}{a}\right )}{2 n}+\frac{i \text{Li}_2\left (\frac{i x^{-n}}{a}\right )}{2 n}\\ \end{align*}
Mathematica [A] time = 0.0150394, size = 40, normalized size = 0.85 \[ -\frac{i \left (\text{PolyLog}\left (2,-\frac{i x^{-n}}{a}\right )-\text{PolyLog}\left (2,\frac{i x^{-n}}{a}\right )\right )}{2 n} \]
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [B] time = 0.052, size = 94, normalized size = 2. \begin{align*}{\frac{\ln \left ( a{x}^{n} \right ){\rm arccot} \left (a{x}^{n}\right )}{n}}-{\frac{{\frac{i}{2}}\ln \left ( a{x}^{n} \right ) \ln \left ( 1+ia{x}^{n} \right ) }{n}}+{\frac{{\frac{i}{2}}\ln \left ( a{x}^{n} \right ) \ln \left ( 1-ia{x}^{n} \right ) }{n}}-{\frac{{\frac{i}{2}}{\it dilog} \left ( 1+ia{x}^{n} \right ) }{n}}+{\frac{{\frac{i}{2}}{\it dilog} \left ( 1-ia{x}^{n} \right ) }{n}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} a n \int \frac{x^{n} \log \left (x\right )}{a^{2} x x^{2 \, n} + x}\,{d x} + \arctan \left (1, a x^{n}\right ) \log \left (x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A] time = 2.32139, size = 181, normalized size = 3.85 \begin{align*} \frac{2 \, n \operatorname{arccot}\left (a x^{n}\right ) \log \left (x\right ) - i \, n \log \left (i \, a x^{n} + 1\right ) \log \left (x\right ) + i \, n \log \left (-i \, a x^{n} + 1\right ) \log \left (x\right ) + i \,{\rm Li}_2\left (i \, a x^{n}\right ) - i \,{\rm Li}_2\left (-i \, a x^{n}\right )}{2 \, n} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\operatorname{acot}{\left (a x^{n} \right )}}{x}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\operatorname{arccot}\left (a x^{n}\right )}{x}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]