Integrand size = 10, antiderivative size = 152 \[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\frac {a^3}{4 x}-\frac {a^2 \cot ^{-1}(a x)}{4 x^2}-i a^4 \cot ^{-1}(a x)^2+\frac {a \cot ^{-1}(a x)^2}{4 x^3}-\frac {3 a^3 \cot ^{-1}(a x)^2}{4 x}+\frac {1}{4} a^4 \cot ^{-1}(a x)^3-\frac {\cot ^{-1}(a x)^3}{4 x^4}+\frac {1}{4} a^4 \arctan (a x)-2 a^4 \cot ^{-1}(a x) \log \left (2-\frac {2}{1-i a x}\right )-i a^4 \operatorname {PolyLog}\left (2,-1+\frac {2}{1-i a x}\right ) \] Output:
1/4*a^3/x-1/4*a^2*arccot(a*x)/x^2-I*a^4*arccot(a*x)^2+1/4*a*arccot(a*x)^2/ x^3-3/4*a^3*arccot(a*x)^2/x+1/4*a^4*arccot(a*x)^3-1/4*arccot(a*x)^3/x^4+1/ 4*a^4*arctan(a*x)-2*a^4*arccot(a*x)*ln(2-2/(1-I*a*x))-I*a^4*polylog(2,-1+2 /(1-I*a*x))
Time = 0.20 (sec) , antiderivative size = 126, normalized size of antiderivative = 0.83 \[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\frac {a^3 x^3+\left (a x-3 a^3 x^3+4 i a^4 x^4\right ) \cot ^{-1}(a x)^2+\left (-1+a^4 x^4\right ) \cot ^{-1}(a x)^3-a^2 x^2 \cot ^{-1}(a x) \left (1+a^2 x^2+8 a^2 x^2 \log \left (1+e^{2 i \cot ^{-1}(a x)}\right )\right )+4 i a^4 x^4 \operatorname {PolyLog}\left (2,-e^{2 i \cot ^{-1}(a x)}\right )}{4 x^4} \] Input:
Integrate[ArcCot[a*x]^3/x^5,x]
Output:
(a^3*x^3 + (a*x - 3*a^3*x^3 + (4*I)*a^4*x^4)*ArcCot[a*x]^2 + (-1 + a^4*x^4 )*ArcCot[a*x]^3 - a^2*x^2*ArcCot[a*x]*(1 + a^2*x^2 + 8*a^2*x^2*Log[1 + E^( (2*I)*ArcCot[a*x])]) + (4*I)*a^4*x^4*PolyLog[2, -E^((2*I)*ArcCot[a*x])])/( 4*x^4)
Time = 1.38 (sec) , antiderivative size = 226, normalized size of antiderivative = 1.49, number of steps used = 11, number of rules used = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.100, Rules used = {5362, 5454, 5362, 5454, 5362, 264, 216, 5420, 5460, 5404, 2897}
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.
\(\displaystyle \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx\) |
\(\Big \downarrow \) 5362 |
\(\displaystyle -\frac {3}{4} a \int \frac {\cot ^{-1}(a x)^2}{x^4 \left (a^2 x^2+1\right )}dx-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 5454 |
\(\displaystyle -\frac {3}{4} a \left (\int \frac {\cot ^{-1}(a x)^2}{x^4}dx-a^2 \int \frac {\cot ^{-1}(a x)^2}{x^2 \left (a^2 x^2+1\right )}dx\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 5362 |
\(\displaystyle -\frac {3}{4} a \left (a^2 \left (-\int \frac {\cot ^{-1}(a x)^2}{x^2 \left (a^2 x^2+1\right )}dx\right )-\frac {2}{3} a \int \frac {\cot ^{-1}(a x)}{x^3 \left (a^2 x^2+1\right )}dx-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 5454 |
\(\displaystyle -\frac {3}{4} a \left (-\left (a^2 \left (\int \frac {\cot ^{-1}(a x)^2}{x^2}dx-a^2 \int \frac {\cot ^{-1}(a x)^2}{a^2 x^2+1}dx\right )\right )-\frac {2}{3} a \left (\int \frac {\cot ^{-1}(a x)}{x^3}dx-a^2 \int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 5362 |
\(\displaystyle -\frac {3}{4} a \left (-\left (a^2 \left (a^2 \left (-\int \frac {\cot ^{-1}(a x)^2}{a^2 x^2+1}dx\right )-2 a \int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {2}{3} a \left (-\frac {1}{2} a \int \frac {1}{x^2 \left (a^2 x^2+1\right )}dx+a^2 \left (-\int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 264 |
\(\displaystyle -\frac {3}{4} a \left (-\left (a^2 \left (a^2 \left (-\int \frac {\cot ^{-1}(a x)^2}{a^2 x^2+1}dx\right )-2 a \int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {2}{3} a \left (-\frac {1}{2} a \left (a^2 \left (-\int \frac {1}{a^2 x^2+1}dx\right )-\frac {1}{x}\right )+a^2 \left (-\int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 216 |
\(\displaystyle -\frac {3}{4} a \left (-\frac {2}{3} a \left (a^2 \left (-\int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx\right )-\frac {1}{2} a \left (-a \arctan (a x)-\frac {1}{x}\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\left (a^2 \left (a^2 \left (-\int \frac {\cot ^{-1}(a x)^2}{a^2 x^2+1}dx\right )-2 a \int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 5420 |
\(\displaystyle -\frac {3}{4} a \left (-\frac {2}{3} a \left (a^2 \left (-\int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx\right )-\frac {1}{2} a \left (-a \arctan (a x)-\frac {1}{x}\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\left (a^2 \left (-2 a \int \frac {\cot ^{-1}(a x)}{x \left (a^2 x^2+1\right )}dx+\frac {1}{3} a \cot ^{-1}(a x)^3-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )-\frac {\cot ^{-1}(a x)^3}{4 x^4}\) |
\(\Big \downarrow \) 5460 |
\(\displaystyle -\frac {\cot ^{-1}(a x)^3}{4 x^4}-\frac {3}{4} a \left (-\frac {2}{3} a \left (-\left (a^2 \left (i \int \frac {\cot ^{-1}(a x)}{x (a x+i)}dx+\frac {1}{2} i \cot ^{-1}(a x)^2\right )\right )-\frac {1}{2} a \left (-a \arctan (a x)-\frac {1}{x}\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\left (a^2 \left (-2 a \left (i \int \frac {\cot ^{-1}(a x)}{x (a x+i)}dx+\frac {1}{2} i \cot ^{-1}(a x)^2\right )+\frac {1}{3} a \cot ^{-1}(a x)^3-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )\) |
\(\Big \downarrow \) 5404 |
\(\displaystyle -\frac {\cot ^{-1}(a x)^3}{4 x^4}-\frac {3}{4} a \left (-\frac {2}{3} a \left (-\left (a^2 \left (i \left (-i a \int \frac {\log \left (2-\frac {2}{1-i a x}\right )}{a^2 x^2+1}dx-i \log \left (2-\frac {2}{1-i a x}\right ) \cot ^{-1}(a x)\right )+\frac {1}{2} i \cot ^{-1}(a x)^2\right )\right )-\frac {1}{2} a \left (-a \arctan (a x)-\frac {1}{x}\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\left (a^2 \left (-2 a \left (i \left (-i a \int \frac {\log \left (2-\frac {2}{1-i a x}\right )}{a^2 x^2+1}dx-i \log \left (2-\frac {2}{1-i a x}\right ) \cot ^{-1}(a x)\right )+\frac {1}{2} i \cot ^{-1}(a x)^2\right )+\frac {1}{3} a \cot ^{-1}(a x)^3-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )\) |
\(\Big \downarrow \) 2897 |
\(\displaystyle -\frac {\cot ^{-1}(a x)^3}{4 x^4}-\frac {3}{4} a \left (-\frac {2}{3} a \left (-\left (a^2 \left (i \left (\frac {1}{2} \operatorname {PolyLog}\left (2,\frac {2}{1-i a x}-1\right )-i \log \left (2-\frac {2}{1-i a x}\right ) \cot ^{-1}(a x)\right )+\frac {1}{2} i \cot ^{-1}(a x)^2\right )\right )-\frac {1}{2} a \left (-a \arctan (a x)-\frac {1}{x}\right )-\frac {\cot ^{-1}(a x)}{2 x^2}\right )-\left (a^2 \left (-2 a \left (i \left (\frac {1}{2} \operatorname {PolyLog}\left (2,\frac {2}{1-i a x}-1\right )-i \log \left (2-\frac {2}{1-i a x}\right ) \cot ^{-1}(a x)\right )+\frac {1}{2} i \cot ^{-1}(a x)^2\right )+\frac {1}{3} a \cot ^{-1}(a x)^3-\frac {\cot ^{-1}(a x)^2}{x}\right )\right )-\frac {\cot ^{-1}(a x)^2}{3 x^3}\right )\) |
Input:
Int[ArcCot[a*x]^3/x^5,x]
Output:
-1/4*ArcCot[a*x]^3/x^4 - (3*a*(-1/3*ArcCot[a*x]^2/x^3 - a^2*(-(ArcCot[a*x] ^2/x) + (a*ArcCot[a*x]^3)/3 - 2*a*((I/2)*ArcCot[a*x]^2 + I*((-I)*ArcCot[a* x]*Log[2 - 2/(1 - I*a*x)] + PolyLog[2, -1 + 2/(1 - I*a*x)]/2))) - (2*a*(-1 /2*ArcCot[a*x]/x^2 - (a*(-x^(-1) - a*ArcTan[a*x]))/2 - a^2*((I/2)*ArcCot[a *x]^2 + I*((-I)*ArcCot[a*x]*Log[2 - 2/(1 - I*a*x)] + PolyLog[2, -1 + 2/(1 - I*a*x)]/2))))/3))/4
Int[((a_) + (b_.)*(x_)^2)^(-1), x_Symbol] :> Simp[(1/(Rt[a, 2]*Rt[b, 2]))*A rcTan[Rt[b, 2]*(x/Rt[a, 2])], x] /; FreeQ[{a, b}, x] && PosQ[a/b] && (GtQ[a , 0] || GtQ[b, 0])
Int[((c_.)*(x_))^(m_)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[(c*x)^( m + 1)*((a + b*x^2)^(p + 1)/(a*c*(m + 1))), x] - Simp[b*((m + 2*p + 3)/(a*c ^2*(m + 1))) Int[(c*x)^(m + 2)*(a + b*x^2)^p, x], x] /; FreeQ[{a, b, c, p }, x] && LtQ[m, -1] && IntBinomialQ[a, b, c, 2, m, p, x]
Int[Log[u_]*(Pq_)^(m_.), x_Symbol] :> With[{C = FullSimplify[Pq^m*((1 - u)/ D[u, x])]}, Simp[C*PolyLog[2, 1 - u], x] /; FreeQ[C, x]] /; IntegerQ[m] && PolyQ[Pq, x] && RationalFunctionQ[u, x] && LeQ[RationalFunctionExponents[u, x][[2]], Expon[Pq, x]]
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_.)/((x_)*((d_) + (e_.)*(x_))), x_ Symbol] :> Simp[(a + b*ArcCot[c*x])^p*(Log[2 - 2/(1 + e*(x/d))]/d), x] + Si mp[b*c*(p/d) Int[(a + b*ArcCot[c*x])^(p - 1)*(Log[2 - 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[1/d Int[(f*x)^m*(a + b*ArcCot[c*x])^p, x], x] - Simp[e/(d*f^2) 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] && LtQ[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*d*(p + 1))), x] + Simp[ I/d Int[(a + b*ArcCot[c*x])^p/(x*(I + c*x)), x], x] /; FreeQ[{a, b, c, d, e}, x] && EqQ[e, c^2*d] && GtQ[p, 0]
Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 15.47 (sec) , antiderivative size = 852, normalized size of antiderivative = 5.61
method | result | size |
parts | \(\text {Expression too large to display}\) | \(852\) |
derivativedivides | \(\text {Expression too large to display}\) | \(855\) |
default | \(\text {Expression too large to display}\) | \(855\) |
Input:
int(arccot(a*x)^3/x^5,x,method=_RETURNVERBOSE)
Output:
-1/4*arccot(a*x)^3/x^4-3/4*a^4*(-1/3*arccot(a*x)^2/a^3/x^3+arccot(a*x)^2/x /a+arccot(a*x)^2*arctan(a*x)-1/2*Pi*arccot(a*x)^2+8/3*arccot(a*x)*ln(1+I*( I+a*x)/(a^2*x^2+1)^(1/2))+8/3*arccot(a*x)*ln(1-I*(I+a*x)/(a^2*x^2+1)^(1/2) )-4/3*I*arccot(a*x)^2-1/3*arccot(a*x)^3+1/4*Pi*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 +1/2*Pi*csgn(I*(I+a*x)/(a^2*x^2+1)^(1/2))*csgn(I*(I+a*x)^2/(a^2*x^2+1))^2* arccot(a*x)^2+1/4*Pi*csgn(I/((I+a*x)^2/(a^2*x^2+1)-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)^2-1/4*Pi*csgn(I*(I+a*x) /(a^2*x^2+1)^(1/2))^2*csgn(I*(I+a*x)^2/(a^2*x^2+1))*arccot(a*x)^2-2/3*arcc ot(a*x)*(I+a*x)/a/x-1/3*I/a/x*(a*x-I)+1/3*arccot(a*x)*(I+a*x)^2/a^2/x^2+2/ 3*arccot(a*x)*(I+a*x)*(a*x-I)/a^2/x^2-I*arccot(a*x)^2*ln((I+a*x)/(a^2*x^2+ 1)^(1/2))-8/3*I*dilog(1+I*(I+a*x)/(a^2*x^2+1)^(1/2))-1/4*Pi*csgn(I*(I+a*x) ^2/(a^2*x^2+1))^3*arccot(a*x)^2-1/4*Pi*csgn(I*(I+a*x)^2/(a^2*x^2+1)/((I+a* x)^2/(a^2*x^2+1)-1))^3*arccot(a*x)^2-1/2*Pi*csgn(I/((I+a*x)^2/(a^2*x^2+1)- 1))^3*arccot(a*x)^2-1/4*Pi*csgn(I/((I+a*x)^2/(a^2*x^2+1)-1))*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))*a rccot(a*x)^2+1/2*Pi*csgn(I/((I+a*x)^2/(a^2*x^2+1)-1))^2*arccot(a*x)^2-8/3* I*dilog(1-I*(I+a*x)/(a^2*x^2+1)^(1/2)))
\[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\int { \frac {\operatorname {arccot}\left (a x\right )^{3}}{x^{5}} \,d x } \] Input:
integrate(arccot(a*x)^3/x^5,x, algorithm="fricas")
Output:
integral(arccot(a*x)^3/x^5, x)
\[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\int \frac {\operatorname {acot}^{3}{\left (a x \right )}}{x^{5}}\, dx \] Input:
integrate(acot(a*x)**3/x**5,x)
Output:
Integral(acot(a*x)**3/x**5, x)
Timed out. \[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\text {Timed out} \] Input:
integrate(arccot(a*x)^3/x^5,x, algorithm="maxima")
Output:
Timed out
\[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\int { \frac {\operatorname {arccot}\left (a x\right )^{3}}{x^{5}} \,d x } \] Input:
integrate(arccot(a*x)^3/x^5,x, algorithm="giac")
Output:
integrate(arccot(a*x)^3/x^5, x)
Timed out. \[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\int \frac {{\mathrm {acot}\left (a\,x\right )}^3}{x^5} \,d x \] Input:
int(acot(a*x)^3/x^5,x)
Output:
int(acot(a*x)^3/x^5, x)
\[ \int \frac {\cot ^{-1}(a x)^3}{x^5} \, dx=\frac {\mathit {acot} \left (a x \right )^{3} a^{4} x^{4}-\mathit {acot} \left (a x \right )^{3}-3 \mathit {acot} \left (a x \right )^{2} a^{3} x^{3}+\mathit {acot} \left (a x \right )^{2} a x +5 \mathit {acot} \left (a x \right ) a^{4} x^{4}+3 \mathit {acot} \left (a x \right ) a^{2} x^{2}-2 \mathit {acot} \left (a x \right )-6 \mathit {atan} \left (\frac {1}{a x}\right ) a^{4} x^{4}-4 \mathit {atan} \left (\frac {1}{a x}\right ) a^{2} x^{2}+2 \mathit {atan} \left (\frac {1}{a x}\right )-8 \left (\int \frac {\mathit {atan} \left (\frac {1}{a x}\right )}{a^{2} x^{3}+x}d x \right ) a^{4} x^{4}+a^{3} x^{3}}{4 x^{4}} \] Input:
int(acot(a*x)^3/x^5,x)
Output:
(acot(a*x)**3*a**4*x**4 - acot(a*x)**3 - 3*acot(a*x)**2*a**3*x**3 + acot(a *x)**2*a*x + 5*acot(a*x)*a**4*x**4 + 3*acot(a*x)*a**2*x**2 - 2*acot(a*x) - 6*atan(1/(a*x))*a**4*x**4 - 4*atan(1/(a*x))*a**2*x**2 + 2*atan(1/(a*x)) - 8*int(atan(1/(a*x))/(a**2*x**3 + x),x)*a**4*x**4 + a**3*x**3)/(4*x**4)