Integrand size = 24, antiderivative size = 267 \[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=-\frac {3 a \sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{2 x}-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}-a^2 \text {arctanh}\left (e^{\text {arctanh}(a x)}\right ) \text {arctanh}(a x)^3-6 a^2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {1+a x}}\right )-\frac {3}{2} a^2 \text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,-e^{\text {arctanh}(a x)}\right )+\frac {3}{2} a^2 \text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )+3 a^2 \operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {1+a x}}\right )-3 a^2 \operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {1+a x}}\right )+3 a^2 \text {arctanh}(a x) \operatorname {PolyLog}\left (3,-e^{\text {arctanh}(a x)}\right )-3 a^2 \text {arctanh}(a x) \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )-3 a^2 \operatorname {PolyLog}\left (4,-e^{\text {arctanh}(a x)}\right )+3 a^2 \operatorname {PolyLog}\left (4,e^{\text {arctanh}(a x)}\right ) \]
-a^2*arctanh((a*x+1)/(-a^2*x^2+1)^(1/2))*arctanh(a*x)^3-6*a^2*arctanh(a*x) *arctanh((-a*x+1)^(1/2)/(a*x+1)^(1/2))-3/2*a^2*arctanh(a*x)^2*polylog(2,-( a*x+1)/(-a^2*x^2+1)^(1/2))+3/2*a^2*arctanh(a*x)^2*polylog(2,(a*x+1)/(-a^2* x^2+1)^(1/2))+3*a^2*polylog(2,-(-a*x+1)^(1/2)/(a*x+1)^(1/2))-3*a^2*polylog (2,(-a*x+1)^(1/2)/(a*x+1)^(1/2))+3*a^2*arctanh(a*x)*polylog(3,-(a*x+1)/(-a ^2*x^2+1)^(1/2))-3*a^2*arctanh(a*x)*polylog(3,(a*x+1)/(-a^2*x^2+1)^(1/2))- 3*a^2*polylog(4,-(a*x+1)/(-a^2*x^2+1)^(1/2))+3*a^2*polylog(4,(a*x+1)/(-a^2 *x^2+1)^(1/2))-3/2*a*arctanh(a*x)^2*(-a^2*x^2+1)^(1/2)/x-1/2*arctanh(a*x)^ 3*(-a^2*x^2+1)^(1/2)/x^2
Time = 6.62 (sec) , antiderivative size = 301, normalized size of antiderivative = 1.13 \[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=\frac {1}{16} a \left (a \pi ^4-2 a \text {arctanh}(a x)^4-12 a \text {arctanh}(a x)^2 \coth \left (\frac {1}{2} \text {arctanh}(a x)\right )-2 a \text {arctanh}(a x)^3 \text {csch}^2\left (\frac {1}{2} \text {arctanh}(a x)\right )+48 a \text {arctanh}(a x) \log \left (1-e^{-\text {arctanh}(a x)}\right )-48 a \text {arctanh}(a x) \log \left (1+e^{-\text {arctanh}(a x)}\right )-8 a \text {arctanh}(a x)^3 \log \left (1+e^{-\text {arctanh}(a x)}\right )+8 a \text {arctanh}(a x)^3 \log \left (1-e^{\text {arctanh}(a x)}\right )+24 a \left (2+\text {arctanh}(a x)^2\right ) \operatorname {PolyLog}\left (2,-e^{-\text {arctanh}(a x)}\right )-48 a \operatorname {PolyLog}\left (2,e^{-\text {arctanh}(a x)}\right )+24 a \text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )+48 a \text {arctanh}(a x) \operatorname {PolyLog}\left (3,-e^{-\text {arctanh}(a x)}\right )-48 a \text {arctanh}(a x) \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )+48 a \operatorname {PolyLog}\left (4,-e^{-\text {arctanh}(a x)}\right )+48 a \operatorname {PolyLog}\left (4,e^{\text {arctanh}(a x)}\right )+12 a \text {arctanh}(a x)^2 \tanh \left (\frac {1}{2} \text {arctanh}(a x)\right )-\frac {4 \sqrt {1-a^2 x^2} \text {arctanh}(a x)^3 \tanh \left (\frac {1}{2} \text {arctanh}(a x)\right )}{x}\right ) \]
(a*(a*Pi^4 - 2*a*ArcTanh[a*x]^4 - 12*a*ArcTanh[a*x]^2*Coth[ArcTanh[a*x]/2] - 2*a*ArcTanh[a*x]^3*Csch[ArcTanh[a*x]/2]^2 + 48*a*ArcTanh[a*x]*Log[1 - E ^(-ArcTanh[a*x])] - 48*a*ArcTanh[a*x]*Log[1 + E^(-ArcTanh[a*x])] - 8*a*Arc Tanh[a*x]^3*Log[1 + E^(-ArcTanh[a*x])] + 8*a*ArcTanh[a*x]^3*Log[1 - E^ArcT anh[a*x]] + 24*a*(2 + ArcTanh[a*x]^2)*PolyLog[2, -E^(-ArcTanh[a*x])] - 48* a*PolyLog[2, E^(-ArcTanh[a*x])] + 24*a*ArcTanh[a*x]^2*PolyLog[2, E^ArcTanh [a*x]] + 48*a*ArcTanh[a*x]*PolyLog[3, -E^(-ArcTanh[a*x])] - 48*a*ArcTanh[a *x]*PolyLog[3, E^ArcTanh[a*x]] + 48*a*PolyLog[4, -E^(-ArcTanh[a*x])] + 48* a*PolyLog[4, E^ArcTanh[a*x]] + 12*a*ArcTanh[a*x]^2*Tanh[ArcTanh[a*x]/2] - (4*Sqrt[1 - a^2*x^2]*ArcTanh[a*x]^3*Tanh[ArcTanh[a*x]/2])/x))/16
Result contains complex when optimal does not.
Time = 1.57 (sec) , antiderivative size = 264, normalized size of antiderivative = 0.99, number of steps used = 12, number of rules used = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.458, Rules used = {6588, 6570, 6580, 6582, 3042, 26, 4670, 3011, 7163, 2720, 7143}
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.
\(\displaystyle \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx\) |
\(\Big \downarrow \) 6588 |
\(\displaystyle \frac {3}{2} a \int \frac {\text {arctanh}(a x)^2}{x^2 \sqrt {1-a^2 x^2}}dx+\frac {1}{2} a^2 \int \frac {\text {arctanh}(a x)^3}{x \sqrt {1-a^2 x^2}}dx-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 6570 |
\(\displaystyle \frac {3}{2} a \left (2 a \int \frac {\text {arctanh}(a x)}{x \sqrt {1-a^2 x^2}}dx-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )+\frac {1}{2} a^2 \int \frac {\text {arctanh}(a x)^3}{x \sqrt {1-a^2 x^2}}dx-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 6580 |
\(\displaystyle \frac {1}{2} a^2 \int \frac {\text {arctanh}(a x)^3}{x \sqrt {1-a^2 x^2}}dx+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 6582 |
\(\displaystyle \frac {1}{2} a^2 \int \frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{a x}d\text {arctanh}(a x)+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \frac {1}{2} a^2 \int i \text {arctanh}(a x)^3 \csc (i \text {arctanh}(a x))d\text {arctanh}(a x)+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 26 |
\(\displaystyle \frac {1}{2} i a^2 \int \text {arctanh}(a x)^3 \csc (i \text {arctanh}(a x))d\text {arctanh}(a x)+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 4670 |
\(\displaystyle \frac {1}{2} i a^2 \left (3 i \int \text {arctanh}(a x)^2 \log \left (1-e^{\text {arctanh}(a x)}\right )d\text {arctanh}(a x)-3 i \int \text {arctanh}(a x)^2 \log \left (1+e^{\text {arctanh}(a x)}\right )d\text {arctanh}(a x)+2 i \text {arctanh}\left (e^{\text {arctanh}(a x)}\right ) \text {arctanh}(a x)^3\right )+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 3011 |
\(\displaystyle \frac {1}{2} i a^2 \left (-3 i \left (2 \int \text {arctanh}(a x) \operatorname {PolyLog}\left (2,-e^{\text {arctanh}(a x)}\right )d\text {arctanh}(a x)-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,-e^{\text {arctanh}(a x)}\right )\right )+3 i \left (2 \int \text {arctanh}(a x) \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )d\text {arctanh}(a x)-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )\right )+2 i \text {arctanh}\left (e^{\text {arctanh}(a x)}\right ) \text {arctanh}(a x)^3\right )+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 7163 |
\(\displaystyle \frac {1}{2} i a^2 \left (-3 i \left (2 \left (\text {arctanh}(a x) \operatorname {PolyLog}\left (3,-e^{\text {arctanh}(a x)}\right )-\int \operatorname {PolyLog}\left (3,-e^{\text {arctanh}(a x)}\right )d\text {arctanh}(a x)\right )-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,-e^{\text {arctanh}(a x)}\right )\right )+3 i \left (2 \left (\text {arctanh}(a x) \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )-\int \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )d\text {arctanh}(a x)\right )-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )\right )+2 i \text {arctanh}\left (e^{\text {arctanh}(a x)}\right ) \text {arctanh}(a x)^3\right )+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 2720 |
\(\displaystyle \frac {1}{2} i a^2 \left (-3 i \left (2 \left (\text {arctanh}(a x) \operatorname {PolyLog}\left (3,-e^{\text {arctanh}(a x)}\right )-\int e^{-\text {arctanh}(a x)} \operatorname {PolyLog}\left (3,-e^{\text {arctanh}(a x)}\right )de^{\text {arctanh}(a x)}\right )-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,-e^{\text {arctanh}(a x)}\right )\right )+3 i \left (2 \left (\text {arctanh}(a x) \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )-\int e^{-\text {arctanh}(a x)} \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )de^{\text {arctanh}(a x)}\right )-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )\right )+2 i \text {arctanh}\left (e^{\text {arctanh}(a x)}\right ) \text {arctanh}(a x)^3\right )+\frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
\(\Big \downarrow \) 7143 |
\(\displaystyle \frac {3}{2} a \left (2 a \left (-2 \text {arctanh}(a x) \text {arctanh}\left (\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )+\operatorname {PolyLog}\left (2,-\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )-\operatorname {PolyLog}\left (2,\frac {\sqrt {1-a x}}{\sqrt {a x+1}}\right )\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^2}{x}\right )+\frac {1}{2} i a^2 \left (-3 i \left (2 \left (\text {arctanh}(a x) \operatorname {PolyLog}\left (3,-e^{\text {arctanh}(a x)}\right )-\operatorname {PolyLog}\left (4,-e^{\text {arctanh}(a x)}\right )\right )-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,-e^{\text {arctanh}(a x)}\right )\right )+3 i \left (2 \left (\text {arctanh}(a x) \operatorname {PolyLog}\left (3,e^{\text {arctanh}(a x)}\right )-\operatorname {PolyLog}\left (4,e^{\text {arctanh}(a x)}\right )\right )-\text {arctanh}(a x)^2 \operatorname {PolyLog}\left (2,e^{\text {arctanh}(a x)}\right )\right )+2 i \text {arctanh}\left (e^{\text {arctanh}(a x)}\right ) \text {arctanh}(a x)^3\right )-\frac {\sqrt {1-a^2 x^2} \text {arctanh}(a x)^3}{2 x^2}\) |
-1/2*(Sqrt[1 - a^2*x^2]*ArcTanh[a*x]^3)/x^2 + (3*a*(-((Sqrt[1 - a^2*x^2]*A rcTanh[a*x]^2)/x) + 2*a*(-2*ArcTanh[a*x]*ArcTanh[Sqrt[1 - a*x]/Sqrt[1 + a* x]] + PolyLog[2, -(Sqrt[1 - a*x]/Sqrt[1 + a*x])] - PolyLog[2, Sqrt[1 - a*x ]/Sqrt[1 + a*x]])))/2 + (I/2)*a^2*((2*I)*ArcTanh[E^ArcTanh[a*x]]*ArcTanh[a *x]^3 - (3*I)*(-(ArcTanh[a*x]^2*PolyLog[2, -E^ArcTanh[a*x]]) + 2*(ArcTanh[ a*x]*PolyLog[3, -E^ArcTanh[a*x]] - PolyLog[4, -E^ArcTanh[a*x]])) + (3*I)*( -(ArcTanh[a*x]^2*PolyLog[2, E^ArcTanh[a*x]]) + 2*(ArcTanh[a*x]*PolyLog[3, E^ArcTanh[a*x]] - PolyLog[4, E^ArcTanh[a*x]])))
3.4.86.3.1 Defintions of rubi rules used
Int[(Complex[0, a_])*(Fx_), x_Symbol] :> Simp[(Complex[Identity[0], a]) I nt[Fx, x], x] /; FreeQ[a, x] && EqQ[a^2, 1]
Int[u_, x_Symbol] :> With[{v = FunctionOfExponential[u, x]}, Simp[v/D[v, x] Subst[Int[FunctionOfExponentialFunction[u, x]/x, x], x, v], x]] /; Funct ionOfExponentialQ[u, x] && !MatchQ[u, (w_)*((a_.)*(v_)^(n_))^(m_) /; FreeQ [{a, m, n}, x] && IntegerQ[m*n]] && !MatchQ[u, E^((c_.)*((a_.) + (b_.)*x)) *(F_)[v_] /; FreeQ[{a, b, c}, x] && InverseFunctionQ[F[x]]]
Int[Log[1 + (e_.)*((F_)^((c_.)*((a_.) + (b_.)*(x_))))^(n_.)]*((f_.) + (g_.) *(x_))^(m_.), x_Symbol] :> Simp[(-(f + g*x)^m)*(PolyLog[2, (-e)*(F^(c*(a + b*x)))^n]/(b*c*n*Log[F])), x] + Simp[g*(m/(b*c*n*Log[F])) Int[(f + g*x)^( m - 1)*PolyLog[2, (-e)*(F^(c*(a + b*x)))^n], x], x] /; FreeQ[{F, a, b, c, e , f, g, n}, x] && GtQ[m, 0]
Int[csc[(e_.) + (Complex[0, fz_])*(f_.)*(x_)]*((c_.) + (d_.)*(x_))^(m_.), x _Symbol] :> Simp[-2*(c + d*x)^m*(ArcTanh[E^((-I)*e + f*fz*x)]/(f*fz*I)), x] + (-Simp[d*(m/(f*fz*I)) Int[(c + d*x)^(m - 1)*Log[1 - E^((-I)*e + f*fz*x )], x], x] + Simp[d*(m/(f*fz*I)) Int[(c + d*x)^(m - 1)*Log[1 + E^((-I)*e + f*fz*x)], x], x]) /; FreeQ[{c, d, e, f, fz}, x] && IGtQ[m, 0]
Int[((a_.) + ArcTanh[(c_.)*(x_)]*(b_.))^(p_.)*((f_.)*(x_))^(m_.)*((d_) + (e _.)*(x_)^2)^(q_.), x_Symbol] :> Simp[(f*x)^(m + 1)*(d + e*x^2)^(q + 1)*((a + b*ArcTanh[c*x])^p/(d*(m + 1))), x] - Simp[b*c*(p/(m + 1)) Int[(f*x)^(m + 1)*(d + e*x^2)^q*(a + b*ArcTanh[c*x])^(p - 1), x], x] /; FreeQ[{a, b, c, d, e, f, m, q}, x] && EqQ[c^2*d + e, 0] && EqQ[m + 2*q + 3, 0] && GtQ[p, 0] && NeQ[m, -1]
Int[((a_.) + ArcTanh[(c_.)*(x_)]*(b_.))/((x_)*Sqrt[(d_) + (e_.)*(x_)^2]), x _Symbol] :> Simp[(-2/Sqrt[d])*(a + b*ArcTanh[c*x])*ArcTanh[Sqrt[1 - c*x]/Sq rt[1 + c*x]], x] + (Simp[(b/Sqrt[d])*PolyLog[2, -Sqrt[1 - c*x]/Sqrt[1 + c*x ]], x] - Simp[(b/Sqrt[d])*PolyLog[2, Sqrt[1 - c*x]/Sqrt[1 + c*x]], x]) /; F reeQ[{a, b, c, d, e}, x] && EqQ[c^2*d + e, 0] && GtQ[d, 0]
Int[((a_.) + ArcTanh[(c_.)*(x_)]*(b_.))^(p_)/((x_)*Sqrt[(d_) + (e_.)*(x_)^2 ]), x_Symbol] :> Simp[1/Sqrt[d] Subst[Int[(a + b*x)^p*Csch[x], x], x, Arc Tanh[c*x]], x] /; FreeQ[{a, b, c, d, e}, x] && EqQ[c^2*d + e, 0] && IGtQ[p, 0] && GtQ[d, 0]
Int[(((a_.) + ArcTanh[(c_.)*(x_)]*(b_.))^(p_.)*((f_.)*(x_))^(m_))/Sqrt[(d_) + (e_.)*(x_)^2], x_Symbol] :> Simp[(f*x)^(m + 1)*Sqrt[d + e*x^2]*((a + b*A rcTanh[c*x])^p/(d*f*(m + 1))), x] + (-Simp[b*c*(p/(f*(m + 1))) Int[(f*x)^ (m + 1)*((a + b*ArcTanh[c*x])^(p - 1)/Sqrt[d + e*x^2]), x], x] + Simp[c^2*( (m + 2)/(f^2*(m + 1))) Int[(f*x)^(m + 2)*((a + b*ArcTanh[c*x])^p/Sqrt[d + e*x^2]), x], x]) /; FreeQ[{a, b, c, d, e, f}, x] && EqQ[c^2*d + e, 0] && G tQ[p, 0] && LtQ[m, -1] && NeQ[m, -2]
Int[PolyLog[n_, (c_.)*((a_.) + (b_.)*(x_))^(p_.)]/((d_.) + (e_.)*(x_)), x_S ymbol] :> Simp[PolyLog[n + 1, c*(a + b*x)^p]/(e*p), x] /; FreeQ[{a, b, c, d , e, n, p}, x] && EqQ[b*d, a*e]
Int[((e_.) + (f_.)*(x_))^(m_.)*PolyLog[n_, (d_.)*((F_)^((c_.)*((a_.) + (b_. )*(x_))))^(p_.)], x_Symbol] :> Simp[(e + f*x)^m*(PolyLog[n + 1, d*(F^(c*(a + b*x)))^p]/(b*c*p*Log[F])), x] - Simp[f*(m/(b*c*p*Log[F])) Int[(e + f*x) ^(m - 1)*PolyLog[n + 1, d*(F^(c*(a + b*x)))^p], x], x] /; FreeQ[{F, a, b, c , d, e, f, n, p}, x] && GtQ[m, 0]
Time = 0.20 (sec) , antiderivative size = 386, normalized size of antiderivative = 1.45
method | result | size |
default | \(-\frac {\sqrt {-\left (a x -1\right ) \left (a x +1\right )}\, \operatorname {arctanh}\left (a x \right )^{2} \left (3 a x +\operatorname {arctanh}\left (a x \right )\right )}{2 x^{2}}+\frac {a^{2} \operatorname {arctanh}\left (a x \right )^{3} \ln \left (1-\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )}{2}+\frac {3 a^{2} \operatorname {arctanh}\left (a x \right )^{2} \operatorname {polylog}\left (2, \frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )}{2}-3 a^{2} \operatorname {arctanh}\left (a x \right ) \operatorname {polylog}\left (3, \frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )+3 a^{2} \operatorname {polylog}\left (4, \frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )-\frac {a^{2} \operatorname {arctanh}\left (a x \right )^{3} \ln \left (1+\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )}{2}-\frac {3 a^{2} \operatorname {arctanh}\left (a x \right )^{2} \operatorname {polylog}\left (2, -\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )}{2}+3 a^{2} \operatorname {arctanh}\left (a x \right ) \operatorname {polylog}\left (3, -\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )-3 a^{2} \operatorname {polylog}\left (4, -\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )+3 a^{2} \operatorname {arctanh}\left (a x \right ) \ln \left (1-\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )+3 a^{2} \operatorname {polylog}\left (2, \frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )-3 a^{2} \operatorname {arctanh}\left (a x \right ) \ln \left (1+\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )-3 a^{2} \operatorname {polylog}\left (2, -\frac {a x +1}{\sqrt {-a^{2} x^{2}+1}}\right )\) | \(386\) |
-1/2*(-(a*x-1)*(a*x+1))^(1/2)*arctanh(a*x)^2*(3*a*x+arctanh(a*x))/x^2+1/2* a^2*arctanh(a*x)^3*ln(1-(a*x+1)/(-a^2*x^2+1)^(1/2))+3/2*a^2*arctanh(a*x)^2 *polylog(2,(a*x+1)/(-a^2*x^2+1)^(1/2))-3*a^2*arctanh(a*x)*polylog(3,(a*x+1 )/(-a^2*x^2+1)^(1/2))+3*a^2*polylog(4,(a*x+1)/(-a^2*x^2+1)^(1/2))-1/2*a^2* arctanh(a*x)^3*ln(1+(a*x+1)/(-a^2*x^2+1)^(1/2))-3/2*a^2*arctanh(a*x)^2*pol ylog(2,-(a*x+1)/(-a^2*x^2+1)^(1/2))+3*a^2*arctanh(a*x)*polylog(3,-(a*x+1)/ (-a^2*x^2+1)^(1/2))-3*a^2*polylog(4,-(a*x+1)/(-a^2*x^2+1)^(1/2))+3*a^2*arc tanh(a*x)*ln(1-(a*x+1)/(-a^2*x^2+1)^(1/2))+3*a^2*polylog(2,(a*x+1)/(-a^2*x ^2+1)^(1/2))-3*a^2*arctanh(a*x)*ln(1+(a*x+1)/(-a^2*x^2+1)^(1/2))-3*a^2*pol ylog(2,-(a*x+1)/(-a^2*x^2+1)^(1/2))
\[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=\int { \frac {\operatorname {artanh}\left (a x\right )^{3}}{\sqrt {-a^{2} x^{2} + 1} x^{3}} \,d x } \]
\[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=\int \frac {\operatorname {atanh}^{3}{\left (a x \right )}}{x^{3} \sqrt {- \left (a x - 1\right ) \left (a x + 1\right )}}\, dx \]
\[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=\int { \frac {\operatorname {artanh}\left (a x\right )^{3}}{\sqrt {-a^{2} x^{2} + 1} x^{3}} \,d x } \]
\[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=\int { \frac {\operatorname {artanh}\left (a x\right )^{3}}{\sqrt {-a^{2} x^{2} + 1} x^{3}} \,d x } \]
Timed out. \[ \int \frac {\text {arctanh}(a x)^3}{x^3 \sqrt {1-a^2 x^2}} \, dx=\int \frac {{\mathrm {atanh}\left (a\,x\right )}^3}{x^3\,\sqrt {1-a^2\,x^2}} \,d x \]