Integrand size = 10, antiderivative size = 205 \[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\frac {x^2}{20 a^3}-\frac {9 x \cot ^{-1}(a x)}{10 a^4}+\frac {x^3 \cot ^{-1}(a x)}{10 a^2}-\frac {9 \cot ^{-1}(a x)^2}{20 a^5}-\frac {3 x^2 \cot ^{-1}(a x)^2}{10 a^3}+\frac {3 x^4 \cot ^{-1}(a x)^2}{20 a}+\frac {i \cot ^{-1}(a x)^3}{5 a^5}+\frac {1}{5} x^5 \cot ^{-1}(a x)^3-\frac {3 \cot ^{-1}(a x)^2 \log \left (\frac {2}{1+i a x}\right )}{5 a^5}-\frac {\log \left (1+a^2 x^2\right )}{2 a^5}+\frac {3 i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,1-\frac {2}{1+i a x}\right )}{5 a^5}-\frac {3 \operatorname {PolyLog}\left (3,1-\frac {2}{1+i a x}\right )}{10 a^5} \] Output:
1/20*x^2/a^3-9/10*x*arccot(a*x)/a^4+1/10*x^3*arccot(a*x)/a^2-9/20*arccot(a *x)^2/a^5-3/10*x^2*arccot(a*x)^2/a^3+3/20*x^4*arccot(a*x)^2/a+1/5*I*arccot (a*x)^3/a^5+1/5*x^5*arccot(a*x)^3-3/5*arccot(a*x)^2*ln(2/(1+I*a*x))/a^5-1/ 2*ln(a^2*x^2+1)/a^5+3/5*I*arccot(a*x)*polylog(2,1-2/(1+I*a*x))/a^5-3/10*po lylog(3,1-2/(1+I*a*x))/a^5
Time = 0.44 (sec) , antiderivative size = 184, normalized size of antiderivative = 0.90 \[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\frac {2+i \pi ^3+2 a^2 x^2-36 a x \cot ^{-1}(a x)+4 a^3 x^3 \cot ^{-1}(a x)-18 \cot ^{-1}(a x)^2-12 a^2 x^2 \cot ^{-1}(a x)^2+6 a^4 x^4 \cot ^{-1}(a x)^2-8 i \cot ^{-1}(a x)^3+8 a^5 x^5 \cot ^{-1}(a x)^3-24 \cot ^{-1}(a x)^2 \log \left (1-e^{-2 i \cot ^{-1}(a x)}\right )+40 \log \left (\frac {1}{a \sqrt {1+\frac {1}{a^2 x^2}} x}\right )-24 i \cot ^{-1}(a x) \operatorname {PolyLog}\left (2,e^{-2 i \cot ^{-1}(a x)}\right )-12 \operatorname {PolyLog}\left (3,e^{-2 i \cot ^{-1}(a x)}\right )}{40 a^5} \] Input:
Integrate[x^4*ArcCot[a*x]^3,x]
Output:
(2 + I*Pi^3 + 2*a^2*x^2 - 36*a*x*ArcCot[a*x] + 4*a^3*x^3*ArcCot[a*x] - 18* ArcCot[a*x]^2 - 12*a^2*x^2*ArcCot[a*x]^2 + 6*a^4*x^4*ArcCot[a*x]^2 - (8*I) *ArcCot[a*x]^3 + 8*a^5*x^5*ArcCot[a*x]^3 - 24*ArcCot[a*x]^2*Log[1 - E^((-2 *I)*ArcCot[a*x])] + 40*Log[1/(a*Sqrt[1 + 1/(a^2*x^2)]*x)] - (24*I)*ArcCot[ a*x]*PolyLog[2, E^((-2*I)*ArcCot[a*x])] - 12*PolyLog[3, E^((-2*I)*ArcCot[a *x])])/(40*a^5)
Time = 2.27 (sec) , antiderivative size = 308, normalized size of antiderivative = 1.50, number of steps used = 17, number of rules used = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.600, Rules used = {5362, 5452, 5362, 5452, 5362, 243, 49, 2009, 5452, 5346, 240, 5420, 5456, 5380, 5530, 7164}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
| \(\displaystyle \int x^4 \cot ^{-1}(a x)^3 \, dx\) |
| \(\Big \downarrow \) 5362 |
| \(\displaystyle \frac {3}{5} a \int \frac {x^5 \cot ^{-1}(a x)^2}{a^2 x^2+1}dx+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5452 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\int x^3 \cot ^{-1}(a x)^2dx}{a^2}-\frac {\int \frac {x^3 \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5362 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \int \frac {x^4 \cot ^{-1}(a x)}{a^2 x^2+1}dx+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x^3 \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5452 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\int x^2 \cot ^{-1}(a x)dx}{a^2}-\frac {\int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {\int x \cot ^{-1}(a x)^2dx}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5362 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{3} a \int \frac {x^3}{a^2 x^2+1}dx+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 243 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \int \frac {x^2}{a^2 x^2+1}dx^2+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 49 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \int \left (\frac {1}{a^2}-\frac {1}{a^2 \left (a^2 x^2+1\right )}\right )dx^2+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 2009 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \int \frac {x^2 \cot ^{-1}(a x)}{a^2 x^2+1}dx+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5452 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\int \cot ^{-1}(a x)dx}{a^2}-\frac {\int \frac {\cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\int \cot ^{-1}(a x)dx}{a^2}-\frac {\int \frac {\cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5346 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {a \int \frac {x}{a^2 x^2+1}dx+x \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {\cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {a \int \frac {x}{a^2 x^2+1}dx+x \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {\cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 240 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {\cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}-\frac {\int \frac {\cot ^{-1}(a x)}{a^2 x^2+1}dx}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5420 |
| \(\displaystyle \frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\int \frac {x \cot ^{-1}(a x)^2}{a^2 x^2+1}dx}{a^2}}{a^2}\right )+\frac {1}{5} x^5 \cot ^{-1}(a x)^3\) |
| \(\Big \downarrow \) 5456 |
| \(\displaystyle \frac {1}{5} x^5 \cot ^{-1}(a x)^3+\frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {i \cot ^{-1}(a x)^3}{3 a^2}-\frac {\int \frac {\cot ^{-1}(a x)^2}{i-a x}dx}{a}}{a^2}}{a^2}\right )\) |
| \(\Big \downarrow \) 5380 |
| \(\displaystyle \frac {1}{5} x^5 \cot ^{-1}(a x)^3+\frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {i \cot ^{-1}(a x)^3}{3 a^2}-\frac {2 \int \frac {\cot ^{-1}(a x) \log \left (\frac {2}{i a x+1}\right )}{a^2 x^2+1}dx+\frac {\log \left (\frac {2}{1+i a x}\right ) \cot ^{-1}(a x)^2}{a}}{a}}{a^2}}{a^2}\right )\) |
| \(\Big \downarrow \) 5530 |
| \(\displaystyle \frac {1}{5} x^5 \cot ^{-1}(a x)^3+\frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {i \cot ^{-1}(a x)^3}{3 a^2}-\frac {2 \left (-\frac {1}{2} i \int \frac {\operatorname {PolyLog}\left (2,1-\frac {2}{i a x+1}\right )}{a^2 x^2+1}dx-\frac {i \operatorname {PolyLog}\left (2,1-\frac {2}{i a x+1}\right ) \cot ^{-1}(a x)}{2 a}\right )+\frac {\log \left (\frac {2}{1+i a x}\right ) \cot ^{-1}(a x)^2}{a}}{a}}{a^2}}{a^2}\right )\) |
| \(\Big \downarrow \) 7164 |
| \(\displaystyle \frac {1}{5} x^5 \cot ^{-1}(a x)^3+\frac {3}{5} a \left (\frac {\frac {1}{2} a \left (\frac {\frac {1}{6} a \left (\frac {x^2}{a^2}-\frac {\log \left (a^2 x^2+1\right )}{a^4}\right )+\frac {1}{3} x^3 \cot ^{-1}(a x)}{a^2}-\frac {\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}}{a^2}\right )+\frac {1}{4} x^4 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {a \left (\frac {\cot ^{-1}(a x)^2}{2 a^3}+\frac {\frac {\log \left (a^2 x^2+1\right )}{2 a}+x \cot ^{-1}(a x)}{a^2}\right )+\frac {1}{2} x^2 \cot ^{-1}(a x)^2}{a^2}-\frac {\frac {i \cot ^{-1}(a x)^3}{3 a^2}-\frac {2 \left (\frac {\operatorname {PolyLog}\left (3,1-\frac {2}{i a x+1}\right )}{4 a}-\frac {i \operatorname {PolyLog}\left (2,1-\frac {2}{i a x+1}\right ) \cot ^{-1}(a x)}{2 a}\right )+\frac {\log \left (\frac {2}{1+i a x}\right ) \cot ^{-1}(a x)^2}{a}}{a}}{a^2}}{a^2}\right )\) |
Input:
Int[x^4*ArcCot[a*x]^3,x]
Output:
(x^5*ArcCot[a*x]^3)/5 + (3*a*(((x^4*ArcCot[a*x]^2)/4 + (a*(((x^3*ArcCot[a* x])/3 + (a*(x^2/a^2 - Log[1 + a^2*x^2]/a^4))/6)/a^2 - (ArcCot[a*x]^2/(2*a^ 3) + (x*ArcCot[a*x] + Log[1 + a^2*x^2]/(2*a))/a^2)/a^2))/2)/a^2 - (((x^2*A rcCot[a*x]^2)/2 + a*(ArcCot[a*x]^2/(2*a^3) + (x*ArcCot[a*x] + Log[1 + a^2* x^2]/(2*a))/a^2))/a^2 - (((I/3)*ArcCot[a*x]^3)/a^2 - ((ArcCot[a*x]^2*Log[2 /(1 + I*a*x)])/a + 2*(((-1/2*I)*ArcCot[a*x]*PolyLog[2, 1 - 2/(1 + I*a*x)]) /a + PolyLog[3, 1 - 2/(1 + I*a*x)]/(4*a)))/a)/a^2)/a^2))/5
Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int [ExpandIntegrand[(a + b*x)^m*(c + d*x)^n, x], x] /; FreeQ[{a, b, c, d}, x] && IGtQ[m, 0] && IGtQ[m + n + 2, 0]
Int[(x_)/((a_) + (b_.)*(x_)^2), x_Symbol] :> Simp[Log[RemoveContent[a + b*x ^2, x]]/(2*b), x] /; FreeQ[{a, b}, x]
Int[(x_)^(m_.)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[1/2 Subst[In t[x^((m - 1)/2)*(a + b*x)^p, x], x, x^2], x] /; FreeQ[{a, b, m, p}, x] && I ntegerQ[(m - 1)/2]
Int[((a_.) + ArcCot[(c_.)*(x_)^(n_.)]*(b_.))^(p_.), x_Symbol] :> Simp[x*(a + b*ArcCot[c*x^n])^p, x] + Simp[b*c*n*p Int[x^n*((a + b*ArcCot[c*x^n])^(p - 1)/(1 + c^2*x^(2*n))), x], x] /; FreeQ[{a, b, c, n}, x] && IGtQ[p, 0] && (EqQ[n, 1] || EqQ[p, 1])
Int[((a_.) + ArcCot[(c_.)*(x_)^(n_.)]*(b_.))^(p_.)*(x_)^(m_.), x_Symbol] :> Simp[x^(m + 1)*((a + b*ArcCot[c*x^n])^p/(m + 1)), x] + Simp[b*c*n*(p/(m + 1)) Int[x^(m + n)*((a + b*ArcCot[c*x^n])^(p - 1)/(1 + c^2*x^(2*n))), x], x] /; FreeQ[{a, b, c, m, n}, x] && IGtQ[p, 0] && (EqQ[p, 1] || (EqQ[n, 1] & & IntegerQ[m])) && NeQ[m, -1]
Int[((a_.) + ArcCot[(c_.)*(x_)]*(b_.))^(p_.)/((d_) + (e_.)*(x_)), x_Symbol] :> Simp[(-(a + b*ArcCot[c*x])^p)*(Log[2/(1 + e*(x/d))]/e), x] - Simp[b*c*( p/e) Int[(a + b*ArcCot[c*x])^(p - 1)*(Log[2/(1 + e*(x/d))]/(1 + c^2*x^2)) , x], x] /; FreeQ[{a, b, c, d, e}, x] && IGtQ[p, 0] && EqQ[c^2*d^2 + e^2, 0 ]
Int[((a_.) + ArcCot[(c_.)*(x_)]*(b_.))^(p_.)/((d_) + (e_.)*(x_)^2), x_Symbo l] :> Simp[-(a + b*ArcCot[c*x])^(p + 1)/(b*c*d*(p + 1)), x] /; FreeQ[{a, b, c, d, e, p}, x] && EqQ[e, c^2*d] && NeQ[p, -1]
Int[(((a_.) + ArcCot[(c_.)*(x_)]*(b_.))^(p_.)*((f_.)*(x_))^(m_))/((d_) + (e _.)*(x_)^2), x_Symbol] :> Simp[f^2/e Int[(f*x)^(m - 2)*(a + b*ArcCot[c*x] )^p, x], x] - Simp[d*(f^2/e) Int[(f*x)^(m - 2)*((a + b*ArcCot[c*x])^p/(d + e*x^2)), x], x] /; FreeQ[{a, b, c, d, e, f}, x] && GtQ[p, 0] && GtQ[m, 1]
Int[(((a_.) + ArcCot[(c_.)*(x_)]*(b_.))^(p_.)*(x_))/((d_) + (e_.)*(x_)^2), x_Symbol] :> Simp[I*((a + b*ArcCot[c*x])^(p + 1)/(b*e*(p + 1))), x] - Simp[ 1/(c*d) Int[(a + b*ArcCot[c*x])^p/(I - c*x), x], x] /; FreeQ[{a, b, c, d, e}, x] && EqQ[e, c^2*d] && IGtQ[p, 0]
Int[(Log[u_]*((a_.) + ArcCot[(c_.)*(x_)]*(b_.))^(p_.))/((d_) + (e_.)*(x_)^2 ), x_Symbol] :> Simp[(-I)*(a + b*ArcCot[c*x])^p*(PolyLog[2, 1 - u]/(2*c*d)) , x] - Simp[b*p*(I/2) Int[(a + b*ArcCot[c*x])^(p - 1)*(PolyLog[2, 1 - u]/ (d + e*x^2)), x], x] /; FreeQ[{a, b, c, d, e}, x] && IGtQ[p, 0] && EqQ[e, c ^2*d] && EqQ[(1 - u)^2 - (1 - 2*(I/(I - c*x)))^2, 0]
Int[(u_)*PolyLog[n_, v_], x_Symbol] :> With[{w = DerivativeDivides[v, u*v, x]}, Simp[w*PolyLog[n + 1, v], x] /; !FalseQ[w]] /; FreeQ[n, x]
Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 7.35 (sec) , antiderivative size = 1910, normalized size of antiderivative = 9.32
| method | result | size |
| derivativedivides | \(\text {Expression too large to display}\) | \(1910\) |
| default | \(\text {Expression too large to display}\) | \(1910\) |
| parts | \(\text {Expression too large to display}\) | \(1912\) |
Input:
int(x^4*arccot(a*x)^3,x,method=_RETURNVERBOSE)
Output:
1/a^5*(3/20*I*Pi*csgn(I/((I+a*x)^2/(a^2*x^2+1)-1)^2)*csgn(I*(I+a*x)^2/(a^2 *x^2+1))*csgn(I*(I+a*x)^2/(a^2*x^2+1)/((I+a*x)^2/(a^2*x^2+1)-1)^2)*arccot( a*x)^2+3/40*(-I*a*x*(a^2*x^2+1)^(1/2)-I*a^2*x^2+2*(a^2*x^2+1)^(1/2)*a^2*x^ 2+2*a^3*x^3-I+(a^2*x^2+1)^(1/2)+2*a*x)*arccot(a*x)-3/40*(-I*a*x*(a^2*x^2+1 )^(1/2)+I*a^2*x^2-2*(a^2*x^2+1)^(1/2)*a^2*x^2+2*a^3*x^3+I-(a^2*x^2+1)^(1/2 )+2*a*x)*arccot(a*x)-3/40*((a^2*x^2+1)^(1/2)-a*x-I*a*x*(a^2*x^2+1)^(1/2)+I *a^2*x^2)*arccot(a*x)-21/40*arccot(a*x)*(a*x+I+(a^2*x^2+1)^(1/2))-3/40*(-( a^2*x^2+1)^(1/2)-a*x+I*a*x*(a^2*x^2+1)^(1/2)+I*a^2*x^2)*arccot(a*x)-3/5*ar ccot(a*x)^2*ln((I+a*x)/(a^2*x^2+1)^(1/2))-3/5*ln(2)*arccot(a*x)^2-3/10*a^2 *x^2*arccot(a*x)^2+3/20*a^4*x^4*arccot(a*x)^2+ln(1+(I+a*x)/(a^2*x^2+1)^(1/ 2))+1/5*x^5*arccot(a*x)^3*a^5+3/20*I*(a*x*(a^2*x^2+1)^(1/2)+a^2*x^2+1)*arc cot(a*x)-3/20*I*Pi*csgn(I*((I+a*x)^2/(a^2*x^2+1)-1)^2)^3*arccot(a*x)^2+3/2 0*I*Pi*csgn(I*(I+a*x)^2/(a^2*x^2+1))^3*arccot(a*x)^2+3/10*arccot(a*x)^2*ln (a^2*x^2+1)-1/40*(a^2*x^2+1)/(I*(a^2*x^2+1)^(1/2)+a*x*(a^2*x^2+1)^(1/2)+I* a*x+a^2*x^2)+1/40*(-3*I*a*x*(a^2*x^2+1)^(1/2)+3*I*a^2*x^2-2*(a^2*x^2+1)^(1 /2)*a^2*x^2+2*a^3*x^3+I+(a^2*x^2+1)^(1/2))*arccot(a*x)+1/20/(a*x+I+(a^2*x^ 2+1)^(1/2))*(a^2*x^2+1)^(1/2)-6/5*polylog(3,(I+a*x)/(a^2*x^2+1)^(1/2))-6/5 *polylog(3,-(I+a*x)/(a^2*x^2+1)^(1/2))+ln((I+a*x)/(a^2*x^2+1)^(1/2)-1)-3/2 0*I*Pi*csgn(I*(I+a*x)^2/(a^2*x^2+1)/((I+a*x)^2/(a^2*x^2+1)-1)^2)^3*arccot( a*x)^2+3/10*I*Pi*csgn(I*((I+a*x)^2/(a^2*x^2+1)-1))*csgn(I*((I+a*x)^2/(a...
\[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\int { x^{4} \operatorname {arccot}\left (a x\right )^{3} \,d x } \] Input:
integrate(x^4*arccot(a*x)^3,x, algorithm="fricas")
Output:
integral(x^4*arccot(a*x)^3, x)
\[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\int x^{4} \operatorname {acot}^{3}{\left (a x \right )}\, dx \] Input:
integrate(x**4*acot(a*x)**3,x)
Output:
Integral(x**4*acot(a*x)**3, x)
\[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\int { x^{4} \operatorname {arccot}\left (a x\right )^{3} \,d x } \] Input:
integrate(x^4*arccot(a*x)^3,x, algorithm="maxima")
Output:
1/40*x^5*arctan2(1, a*x)^3 - 3/160*x^5*arctan2(1, a*x)*log(a^2*x^2 + 1)^2 + integrate(1/160*(140*a^2*x^6*arctan2(1, a*x)^3 + 12*a^2*x^6*arctan2(1, a *x)*log(a^2*x^2 + 1) + 12*a*x^5*arctan2(1, a*x)^2 + 140*x^4*arctan2(1, a*x )^3 + 3*(5*a^2*x^6*arctan2(1, a*x) - a*x^5 + 5*x^4*arctan2(1, a*x))*log(a^ 2*x^2 + 1)^2)/(a^2*x^2 + 1), x)
\[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\int { x^{4} \operatorname {arccot}\left (a x\right )^{3} \,d x } \] Input:
integrate(x^4*arccot(a*x)^3,x, algorithm="giac")
Output:
integrate(x^4*arccot(a*x)^3, x)
Timed out. \[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\int x^4\,{\mathrm {acot}\left (a\,x\right )}^3 \,d x \] Input:
int(x^4*acot(a*x)^3,x)
Output:
int(x^4*acot(a*x)^3, x)
\[ \int x^4 \cot ^{-1}(a x)^3 \, dx=\frac {4 \mathit {acot} \left (a x \right )^{3} a^{5} x^{5}-4 \mathit {acot} \left (a x \right )^{3} a x +3 \mathit {acot} \left (a x \right )^{2} a^{4} x^{4}-6 \mathit {acot} \left (a x \right )^{2} a^{2} x^{2}-9 \mathit {acot} \left (a x \right )^{2}+2 \mathit {acot} \left (a x \right ) a^{3} x^{3}-18 \mathit {acot} \left (a x \right ) a x +4 \left (\int \mathit {acot} \left (a x \right )^{3}d x \right ) a -10 \,\mathrm {log}\left (a^{2} x^{2}+1\right )+a^{2} x^{2}}{20 a^{5}} \] Input:
int(x^4*acot(a*x)^3,x)
Output:
(4*acot(a*x)**3*a**5*x**5 - 4*acot(a*x)**3*a*x + 3*acot(a*x)**2*a**4*x**4 - 6*acot(a*x)**2*a**2*x**2 - 9*acot(a*x)**2 + 2*acot(a*x)*a**3*x**3 - 18*a cot(a*x)*a*x + 4*int(acot(a*x)**3,x)*a - 10*log(a**2*x**2 + 1) + a**2*x**2 )/(20*a**5)