Optimal. Leaf size=116 \[ -\frac{1}{2} \text{PolyLog}\left (3,1-\frac{2 i}{a x+i}\right )+\frac{1}{2} \text{PolyLog}\left (3,1-\frac{2 a x}{a x+i}\right )-i \cot ^{-1}(a x) \text{PolyLog}\left (2,1-\frac{2 i}{a x+i}\right )+i \cot ^{-1}(a x) \text{PolyLog}\left (2,1-\frac{2 a x}{a x+i}\right )+2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac{2}{1+i a x}\right ) \]
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Rubi [A] time = 0.212925, antiderivative size = 116, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 5, integrand size = 10, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.5, Rules used = {4851, 4989, 4885, 4993, 6610} \[ -\frac{1}{2} \text{PolyLog}\left (3,1-\frac{2 i}{a x+i}\right )+\frac{1}{2} \text{PolyLog}\left (3,1-\frac{2 a x}{a x+i}\right )-i \cot ^{-1}(a x) \text{PolyLog}\left (2,1-\frac{2 i}{a x+i}\right )+i \cot ^{-1}(a x) \text{PolyLog}\left (2,1-\frac{2 a x}{a x+i}\right )+2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac{2}{1+i a x}\right ) \]
Antiderivative was successfully verified.
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Rule 4851
Rule 4989
Rule 4885
Rule 4993
Rule 6610
Rubi steps
\begin{align*} \int \frac{\cot ^{-1}(a x)^2}{x} \, dx &=2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac{2}{1+i a x}\right )+(4 a) \int \frac{\cot ^{-1}(a x) \coth ^{-1}\left (1-\frac{2}{1+i a x}\right )}{1+a^2 x^2} \, dx\\ &=2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac{2}{1+i a x}\right )-(2 a) \int \frac{\cot ^{-1}(a x) \log \left (\frac{2 i}{i+a x}\right )}{1+a^2 x^2} \, dx+(2 a) \int \frac{\cot ^{-1}(a x) \log \left (\frac{2 a x}{i+a x}\right )}{1+a^2 x^2} \, dx\\ &=2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac{2}{1+i a x}\right )-i \cot ^{-1}(a x) \text{Li}_2\left (1-\frac{2 i}{i+a x}\right )+i \cot ^{-1}(a x) \text{Li}_2\left (1-\frac{2 a x}{i+a x}\right )-(i a) \int \frac{\text{Li}_2\left (1-\frac{2 i}{i+a x}\right )}{1+a^2 x^2} \, dx+(i a) \int \frac{\text{Li}_2\left (1-\frac{2 a x}{i+a x}\right )}{1+a^2 x^2} \, dx\\ &=2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac{2}{1+i a x}\right )-i \cot ^{-1}(a x) \text{Li}_2\left (1-\frac{2 i}{i+a x}\right )+i \cot ^{-1}(a x) \text{Li}_2\left (1-\frac{2 a x}{i+a x}\right )-\frac{1}{2} \text{Li}_3\left (1-\frac{2 i}{i+a x}\right )+\frac{1}{2} \text{Li}_3\left (1-\frac{2 a x}{i+a x}\right )\\ \end{align*}
Mathematica [A] time = 0.0604744, size = 132, normalized size = 1.14 \[ -i \cot ^{-1}(a x) \text{PolyLog}\left (2,e^{-2 i \cot ^{-1}(a x)}\right )-i \cot ^{-1}(a x) \text{PolyLog}\left (2,-e^{2 i \cot ^{-1}(a x)}\right )-\frac{1}{2} \text{PolyLog}\left (3,e^{-2 i \cot ^{-1}(a x)}\right )+\frac{1}{2} \text{PolyLog}\left (3,-e^{2 i \cot ^{-1}(a x)}\right )-\frac{2}{3} i \cot ^{-1}(a x)^3-\cot ^{-1}(a x)^2 \log \left (1-e^{-2 i \cot ^{-1}(a x)}\right )+\cot ^{-1}(a x)^2 \log \left (1+e^{2 i \cot ^{-1}(a x)}\right ) \]
Warning: Unable to verify antiderivative.
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Maple [C] time = 0.601, size = 959, normalized size = 8.3 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\operatorname{arccot}\left (a x\right )^{2}}{x}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\operatorname{arccot}\left (a x\right )^{2}}{x}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\operatorname{acot}^{2}{\left (a x \right )}}{x}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\operatorname{arccot}\left (a x\right )^{2}}{x}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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