Integrand size = 10, antiderivative size = 196 \[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\frac {x^2}{20 a^3}+\frac {9 x \coth ^{-1}(a x)}{10 a^4}+\frac {x^3 \coth ^{-1}(a x)}{10 a^2}-\frac {9 \coth ^{-1}(a x)^2}{20 a^5}+\frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {\coth ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3 \coth ^{-1}(a x)^2 \log \left (\frac {2}{1-a x}\right )}{5 a^5}+\frac {\log \left (1-a^2 x^2\right )}{2 a^5}-\frac {3 \coth ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2}{1-a x}\right )}{5 a^5}+\frac {3 \operatorname {PolyLog}\left (3,1-\frac {2}{1-a x}\right )}{10 a^5} \]
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Time = 0.44 (sec) , antiderivative size = 196, normalized size of antiderivative = 1.00, number of steps used = 22, number of rules used = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.100, Rules used = {6038, 6128, 272, 45, 6022, 266, 6096, 6132, 6056, 6206, 6745} \[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\frac {3 \operatorname {PolyLog}\left (3,1-\frac {2}{1-a x}\right )}{10 a^5}-\frac {3 \operatorname {PolyLog}\left (2,1-\frac {2}{1-a x}\right ) \coth ^{-1}(a x)}{5 a^5}+\frac {\coth ^{-1}(a x)^3}{5 a^5}-\frac {9 \coth ^{-1}(a x)^2}{20 a^5}-\frac {3 \log \left (\frac {2}{1-a x}\right ) \coth ^{-1}(a x)^2}{5 a^5}+\frac {9 x \coth ^{-1}(a x)}{10 a^4}+\frac {x^2}{20 a^3}+\frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {x^3 \coth ^{-1}(a x)}{10 a^2}+\frac {\log \left (1-a^2 x^2\right )}{2 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a} \]
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Rule 45
Rule 266
Rule 272
Rule 6022
Rule 6038
Rule 6056
Rule 6096
Rule 6128
Rule 6132
Rule 6206
Rule 6745
Rubi steps \begin{align*} \text {integral}& = \frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {1}{5} (3 a) \int \frac {x^5 \coth ^{-1}(a x)^2}{1-a^2 x^2} \, dx \\ & = \frac {1}{5} x^5 \coth ^{-1}(a x)^3+\frac {3 \int x^3 \coth ^{-1}(a x)^2 \, dx}{5 a}-\frac {3 \int \frac {x^3 \coth ^{-1}(a x)^2}{1-a^2 x^2} \, dx}{5 a} \\ & = \frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3}{10} \int \frac {x^4 \coth ^{-1}(a x)}{1-a^2 x^2} \, dx+\frac {3 \int x \coth ^{-1}(a x)^2 \, dx}{5 a^3}-\frac {3 \int \frac {x \coth ^{-1}(a x)^2}{1-a^2 x^2} \, dx}{5 a^3} \\ & = \frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {\coth ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3 \int \frac {\coth ^{-1}(a x)^2}{1-a x} \, dx}{5 a^4}+\frac {3 \int x^2 \coth ^{-1}(a x) \, dx}{10 a^2}-\frac {3 \int \frac {x^2 \coth ^{-1}(a x)}{1-a^2 x^2} \, dx}{10 a^2}-\frac {3 \int \frac {x^2 \coth ^{-1}(a x)}{1-a^2 x^2} \, dx}{5 a^2} \\ & = \frac {x^3 \coth ^{-1}(a x)}{10 a^2}+\frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {\coth ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3 \coth ^{-1}(a x)^2 \log \left (\frac {2}{1-a x}\right )}{5 a^5}+\frac {3 \int \coth ^{-1}(a x) \, dx}{10 a^4}-\frac {3 \int \frac {\coth ^{-1}(a x)}{1-a^2 x^2} \, dx}{10 a^4}+\frac {3 \int \coth ^{-1}(a x) \, dx}{5 a^4}-\frac {3 \int \frac {\coth ^{-1}(a x)}{1-a^2 x^2} \, dx}{5 a^4}+\frac {6 \int \frac {\coth ^{-1}(a x) \log \left (\frac {2}{1-a x}\right )}{1-a^2 x^2} \, dx}{5 a^4}-\frac {\int \frac {x^3}{1-a^2 x^2} \, dx}{10 a} \\ & = \frac {9 x \coth ^{-1}(a x)}{10 a^4}+\frac {x^3 \coth ^{-1}(a x)}{10 a^2}-\frac {9 \coth ^{-1}(a x)^2}{20 a^5}+\frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {\coth ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3 \coth ^{-1}(a x)^2 \log \left (\frac {2}{1-a x}\right )}{5 a^5}-\frac {3 \coth ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2}{1-a x}\right )}{5 a^5}+\frac {3 \int \frac {\operatorname {PolyLog}\left (2,1-\frac {2}{1-a x}\right )}{1-a^2 x^2} \, dx}{5 a^4}-\frac {3 \int \frac {x}{1-a^2 x^2} \, dx}{10 a^3}-\frac {3 \int \frac {x}{1-a^2 x^2} \, dx}{5 a^3}-\frac {\text {Subst}\left (\int \frac {x}{1-a^2 x} \, dx,x,x^2\right )}{20 a} \\ & = \frac {9 x \coth ^{-1}(a x)}{10 a^4}+\frac {x^3 \coth ^{-1}(a x)}{10 a^2}-\frac {9 \coth ^{-1}(a x)^2}{20 a^5}+\frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {\coth ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3 \coth ^{-1}(a x)^2 \log \left (\frac {2}{1-a x}\right )}{5 a^5}+\frac {9 \log \left (1-a^2 x^2\right )}{20 a^5}-\frac {3 \coth ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2}{1-a x}\right )}{5 a^5}+\frac {3 \operatorname {PolyLog}\left (3,1-\frac {2}{1-a x}\right )}{10 a^5}-\frac {\text {Subst}\left (\int \left (-\frac {1}{a^2}-\frac {1}{a^2 \left (-1+a^2 x\right )}\right ) \, dx,x,x^2\right )}{20 a} \\ & = \frac {x^2}{20 a^3}+\frac {9 x \coth ^{-1}(a x)}{10 a^4}+\frac {x^3 \coth ^{-1}(a x)}{10 a^2}-\frac {9 \coth ^{-1}(a x)^2}{20 a^5}+\frac {3 x^2 \coth ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \coth ^{-1}(a x)^2}{20 a}+\frac {\coth ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \coth ^{-1}(a x)^3-\frac {3 \coth ^{-1}(a x)^2 \log \left (\frac {2}{1-a x}\right )}{5 a^5}+\frac {\log \left (1-a^2 x^2\right )}{2 a^5}-\frac {3 \coth ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2}{1-a x}\right )}{5 a^5}+\frac {3 \operatorname {PolyLog}\left (3,1-\frac {2}{1-a x}\right )}{10 a^5} \\ \end{align*}
Result contains complex when optimal does not.
Time = 0.51 (sec) , antiderivative size = 178, normalized size of antiderivative = 0.91 \[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\frac {-2-i \pi ^3+2 a^2 x^2+36 a x \coth ^{-1}(a x)+4 a^3 x^3 \coth ^{-1}(a x)-18 \coth ^{-1}(a x)^2+12 a^2 x^2 \coth ^{-1}(a x)^2+6 a^4 x^4 \coth ^{-1}(a x)^2+8 \coth ^{-1}(a x)^3+8 a^5 x^5 \coth ^{-1}(a x)^3-24 \coth ^{-1}(a x)^2 \log \left (1-e^{2 \coth ^{-1}(a x)}\right )-40 \log \left (\frac {1}{\sqrt {1-\frac {1}{a^2 x^2}}}\right )-40 \log \left (\frac {1}{a x}\right )-24 \coth ^{-1}(a x) \operatorname {PolyLog}\left (2,e^{2 \coth ^{-1}(a x)}\right )+12 \operatorname {PolyLog}\left (3,e^{2 \coth ^{-1}(a x)}\right )}{40 a^5} \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 5.11 (sec) , antiderivative size = 737, normalized size of antiderivative = 3.76
method | result | size |
derivativedivides | \(\text {Expression too large to display}\) | \(737\) |
default | \(\text {Expression too large to display}\) | \(737\) |
parts | \(\text {Expression too large to display}\) | \(737\) |
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\[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\int { x^{4} \operatorname {arcoth}\left (a x\right )^{3} \,d x } \]
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\[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\int x^{4} \operatorname {acoth}^{3}{\left (a x \right )}\, dx \]
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\[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\int { x^{4} \operatorname {arcoth}\left (a x\right )^{3} \,d x } \]
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\[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\int { x^{4} \operatorname {arcoth}\left (a x\right )^{3} \,d x } \]
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Timed out. \[ \int x^4 \coth ^{-1}(a x)^3 \, dx=\int x^4\,{\mathrm {acoth}\left (a\,x\right )}^3 \,d x \]
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