Integrand size = 10, antiderivative size = 116 \[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac {2}{1+i a x}\right )-i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2 i}{i+a x}\right )+i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2 a x}{i+a x}\right )-\frac {1}{2} \operatorname {PolyLog}\left (3,1-\frac {2 i}{i+a x}\right )+\frac {1}{2} \operatorname {PolyLog}\left (3,1-\frac {2 a x}{i+a x}\right ) \]
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Time = 0.16 (sec) , antiderivative size = 116, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {4943, 5109, 5005, 5113, 6745} \[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=-\frac {1}{2} \operatorname {PolyLog}\left (3,1-\frac {2 i}{a x+i}\right )+\frac {1}{2} \operatorname {PolyLog}\left (3,1-\frac {2 a x}{a x+i}\right )-i \operatorname {PolyLog}\left (2,1-\frac {2 i}{a x+i}\right ) \cot ^{-1}(a x)+i \operatorname {PolyLog}\left (2,1-\frac {2 a x}{a x+i}\right ) \cot ^{-1}(a x)+2 \cot ^{-1}(a x)^2 \coth ^{-1}\left (1-\frac {2}{1+i a x}\right ) \]
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Rule 4943
Rule 5005
Rule 5109
Rule 5113
Rule 6745
Rubi steps \begin{align*} \text {integral}& = 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) \operatorname {PolyLog}\left (2,1-\frac {2 i}{i+a x}\right )+i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2 a x}{i+a x}\right )-(i a) \int \frac {\operatorname {PolyLog}\left (2,1-\frac {2 i}{i+a x}\right )}{1+a^2 x^2} \, dx+(i a) \int \frac {\operatorname {PolyLog}\left (2,1-\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) \operatorname {PolyLog}\left (2,1-\frac {2 i}{i+a x}\right )+i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2 a x}{i+a x}\right )-\frac {1}{2} \operatorname {PolyLog}\left (3,1-\frac {2 i}{i+a x}\right )+\frac {1}{2} \operatorname {PolyLog}\left (3,1-\frac {2 a x}{i+a x}\right ) \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 132, normalized size of antiderivative = 1.14 \[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=-\frac {2}{3} i \cot ^{-1}(a x)^3-\cot ^{-1}(a x)^2 \log \left (1-e^{-2 i \cot ^{-1}(a x)}\right )+\cot ^{-1}(a x)^2 \log \left (1+e^{2 i \cot ^{-1}(a x)}\right )-i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,e^{-2 i \cot ^{-1}(a x)}\right )-i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,-e^{2 i \cot ^{-1}(a x)}\right )-\frac {1}{2} \operatorname {PolyLog}\left (3,e^{-2 i \cot ^{-1}(a x)}\right )+\frac {1}{2} \operatorname {PolyLog}\left (3,-e^{2 i \cot ^{-1}(a x)}\right ) \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 5.67 (sec) , antiderivative size = 891, normalized size of antiderivative = 7.68
method | result | size |
derivativedivides | \(\ln \left (a x \right ) \operatorname {arccot}\left (a x \right )^{2}+\frac {i \pi \left (\operatorname {csgn}\left (\frac {i}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) \operatorname {csgn}\left (i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )\right ) \operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )-\operatorname {csgn}\left (\frac {i}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) {\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}-\operatorname {csgn}\left (i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )\right ) {\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}+{\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{3}-\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) {\operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}+\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) \operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )-{\operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{3}+{\operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}-1\right ) \operatorname {arccot}\left (a x \right )^{2}}{2}+\operatorname {arccot}\left (a x \right )^{2} \ln \left (\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1\right )-\operatorname {arccot}\left (a x \right )^{2} \ln \left (1-\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )+2 i \operatorname {arccot}\left (a x \right ) \operatorname {polylog}\left (2, \frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-2 \operatorname {polylog}\left (3, \frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-\operatorname {arccot}\left (a x \right )^{2} \ln \left (1+\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )+2 i \operatorname {arccot}\left (a x \right ) \operatorname {polylog}\left (2, -\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-2 \operatorname {polylog}\left (3, -\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-i \operatorname {arccot}\left (a x \right ) \operatorname {polylog}\left (2, -\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )+\frac {\operatorname {polylog}\left (3, -\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{2}\) | \(891\) |
default | \(\ln \left (a x \right ) \operatorname {arccot}\left (a x \right )^{2}+\frac {i \pi \left (\operatorname {csgn}\left (\frac {i}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) \operatorname {csgn}\left (i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )\right ) \operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )-\operatorname {csgn}\left (\frac {i}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) {\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}-\operatorname {csgn}\left (i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )\right ) {\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}+{\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{3}-\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) {\operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}+\operatorname {csgn}\left (\frac {i \left (1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right ) \operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )-{\operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{3}+{\operatorname {csgn}\left (\frac {1+\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}}{\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1}\right )}^{2}-1\right ) \operatorname {arccot}\left (a x \right )^{2}}{2}+\operatorname {arccot}\left (a x \right )^{2} \ln \left (\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}-1\right )-\operatorname {arccot}\left (a x \right )^{2} \ln \left (1-\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )+2 i \operatorname {arccot}\left (a x \right ) \operatorname {polylog}\left (2, \frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-2 \operatorname {polylog}\left (3, \frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-\operatorname {arccot}\left (a x \right )^{2} \ln \left (1+\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )+2 i \operatorname {arccot}\left (a x \right ) \operatorname {polylog}\left (2, -\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-2 \operatorname {polylog}\left (3, -\frac {a x +i}{\sqrt {a^{2} x^{2}+1}}\right )-i \operatorname {arccot}\left (a x \right ) \operatorname {polylog}\left (2, -\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )+\frac {\operatorname {polylog}\left (3, -\frac {\left (a x +i\right )^{2}}{a^{2} x^{2}+1}\right )}{2}\) | \(891\) |
parts | \(\text {Expression too large to display}\) | \(1317\) |
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\[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=\int { \frac {\operatorname {arccot}\left (a x\right )^{2}}{x} \,d x } \]
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\[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=\int \frac {\operatorname {acot}^{2}{\left (a x \right )}}{x}\, dx \]
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\[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=\int { \frac {\operatorname {arccot}\left (a x\right )^{2}}{x} \,d x } \]
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\[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=\int { \frac {\operatorname {arccot}\left (a x\right )^{2}}{x} \,d x } \]
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Timed out. \[ \int \frac {\cot ^{-1}(a x)^2}{x} \, dx=\int \frac {{\mathrm {acot}\left (a\,x\right )}^2}{x} \,d x \]
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