Integrand size = 14, antiderivative size = 149 \[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=-\frac {2 (c+d x)^3 \text {arctanh}\left (e^{a+b x}\right )}{b}-\frac {3 d (c+d x)^2 \operatorname {PolyLog}\left (2,-e^{a+b x}\right )}{b^2}+\frac {3 d (c+d x)^2 \operatorname {PolyLog}\left (2,e^{a+b x}\right )}{b^2}+\frac {6 d^2 (c+d x) \operatorname {PolyLog}\left (3,-e^{a+b x}\right )}{b^3}-\frac {6 d^2 (c+d x) \operatorname {PolyLog}\left (3,e^{a+b x}\right )}{b^3}-\frac {6 d^3 \operatorname {PolyLog}\left (4,-e^{a+b x}\right )}{b^4}+\frac {6 d^3 \operatorname {PolyLog}\left (4,e^{a+b x}\right )}{b^4} \]
-2*(d*x+c)^3*arctanh(exp(b*x+a))/b-3*d*(d*x+c)^2*polylog(2,-exp(b*x+a))/b^ 2+3*d*(d*x+c)^2*polylog(2,exp(b*x+a))/b^2+6*d^2*(d*x+c)*polylog(3,-exp(b*x +a))/b^3-6*d^2*(d*x+c)*polylog(3,exp(b*x+a))/b^3-6*d^3*polylog(4,-exp(b*x+ a))/b^4+6*d^3*polylog(4,exp(b*x+a))/b^4
Time = 0.20 (sec) , antiderivative size = 168, normalized size of antiderivative = 1.13 \[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=\frac {(c+d x)^3 \log \left (1-e^{a+b x}\right )-(c+d x)^3 \log \left (1+e^{a+b x}\right )-\frac {3 d \left (b^2 (c+d x)^2 \operatorname {PolyLog}\left (2,-e^{a+b x}\right )-2 b d (c+d x) \operatorname {PolyLog}\left (3,-e^{a+b x}\right )+2 d^2 \operatorname {PolyLog}\left (4,-e^{a+b x}\right )\right )}{b^3}+\frac {3 d \left (b^2 (c+d x)^2 \operatorname {PolyLog}\left (2,e^{a+b x}\right )-2 b d (c+d x) \operatorname {PolyLog}\left (3,e^{a+b x}\right )+2 d^2 \operatorname {PolyLog}\left (4,e^{a+b x}\right )\right )}{b^3}}{b} \]
((c + d*x)^3*Log[1 - E^(a + b*x)] - (c + d*x)^3*Log[1 + E^(a + b*x)] - (3* d*(b^2*(c + d*x)^2*PolyLog[2, -E^(a + b*x)] - 2*b*d*(c + d*x)*PolyLog[3, - E^(a + b*x)] + 2*d^2*PolyLog[4, -E^(a + b*x)]))/b^3 + (3*d*(b^2*(c + d*x)^ 2*PolyLog[2, E^(a + b*x)] - 2*b*d*(c + d*x)*PolyLog[3, E^(a + b*x)] + 2*d^ 2*PolyLog[4, E^(a + b*x)]))/b^3)/b
Result contains complex when optimal does not.
Time = 0.69 (sec) , antiderivative size = 173, normalized size of antiderivative = 1.16, number of steps used = 8, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {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.
\(\displaystyle \int (c+d x)^3 \text {csch}(a+b x) \, dx\) |
\(\Big \downarrow \) 3042 |
\(\displaystyle \int i (c+d x)^3 \csc (i a+i b x)dx\) |
\(\Big \downarrow \) 26 |
\(\displaystyle i \int (c+d x)^3 \csc (i a+i b x)dx\) |
\(\Big \downarrow \) 4670 |
\(\displaystyle i \left (\frac {3 i d \int (c+d x)^2 \log \left (1-e^{a+b x}\right )dx}{b}-\frac {3 i d \int (c+d x)^2 \log \left (1+e^{a+b x}\right )dx}{b}+\frac {2 i (c+d x)^3 \text {arctanh}\left (e^{a+b x}\right )}{b}\right )\) |
\(\Big \downarrow \) 3011 |
\(\displaystyle i \left (-\frac {3 i d \left (\frac {2 d \int (c+d x) \operatorname {PolyLog}\left (2,-e^{a+b x}\right )dx}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,-e^{a+b x}\right )}{b}\right )}{b}+\frac {3 i d \left (\frac {2 d \int (c+d x) \operatorname {PolyLog}\left (2,e^{a+b x}\right )dx}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,e^{a+b x}\right )}{b}\right )}{b}+\frac {2 i (c+d x)^3 \text {arctanh}\left (e^{a+b x}\right )}{b}\right )\) |
\(\Big \downarrow \) 7163 |
\(\displaystyle i \left (-\frac {3 i d \left (\frac {2 d \left (\frac {(c+d x) \operatorname {PolyLog}\left (3,-e^{a+b x}\right )}{b}-\frac {d \int \operatorname {PolyLog}\left (3,-e^{a+b x}\right )dx}{b}\right )}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,-e^{a+b x}\right )}{b}\right )}{b}+\frac {3 i d \left (\frac {2 d \left (\frac {(c+d x) \operatorname {PolyLog}\left (3,e^{a+b x}\right )}{b}-\frac {d \int \operatorname {PolyLog}\left (3,e^{a+b x}\right )dx}{b}\right )}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,e^{a+b x}\right )}{b}\right )}{b}+\frac {2 i (c+d x)^3 \text {arctanh}\left (e^{a+b x}\right )}{b}\right )\) |
\(\Big \downarrow \) 2720 |
\(\displaystyle i \left (-\frac {3 i d \left (\frac {2 d \left (\frac {(c+d x) \operatorname {PolyLog}\left (3,-e^{a+b x}\right )}{b}-\frac {d \int e^{-a-b x} \operatorname {PolyLog}\left (3,-e^{a+b x}\right )de^{a+b x}}{b^2}\right )}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,-e^{a+b x}\right )}{b}\right )}{b}+\frac {3 i d \left (\frac {2 d \left (\frac {(c+d x) \operatorname {PolyLog}\left (3,e^{a+b x}\right )}{b}-\frac {d \int e^{-a-b x} \operatorname {PolyLog}\left (3,e^{a+b x}\right )de^{a+b x}}{b^2}\right )}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,e^{a+b x}\right )}{b}\right )}{b}+\frac {2 i (c+d x)^3 \text {arctanh}\left (e^{a+b x}\right )}{b}\right )\) |
\(\Big \downarrow \) 7143 |
\(\displaystyle i \left (\frac {2 i (c+d x)^3 \text {arctanh}\left (e^{a+b x}\right )}{b}-\frac {3 i d \left (\frac {2 d \left (\frac {(c+d x) \operatorname {PolyLog}\left (3,-e^{a+b x}\right )}{b}-\frac {d \operatorname {PolyLog}\left (4,-e^{a+b x}\right )}{b^2}\right )}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,-e^{a+b x}\right )}{b}\right )}{b}+\frac {3 i d \left (\frac {2 d \left (\frac {(c+d x) \operatorname {PolyLog}\left (3,e^{a+b x}\right )}{b}-\frac {d \operatorname {PolyLog}\left (4,e^{a+b x}\right )}{b^2}\right )}{b}-\frac {(c+d x)^2 \operatorname {PolyLog}\left (2,e^{a+b x}\right )}{b}\right )}{b}\right )\) |
I*(((2*I)*(c + d*x)^3*ArcTanh[E^(a + b*x)])/b - ((3*I)*d*(-(((c + d*x)^2*P olyLog[2, -E^(a + b*x)])/b) + (2*d*(((c + d*x)*PolyLog[3, -E^(a + b*x)])/b - (d*PolyLog[4, -E^(a + b*x)])/b^2))/b))/b + ((3*I)*d*(-(((c + d*x)^2*Pol yLog[2, E^(a + b*x)])/b) + (2*d*(((c + d*x)*PolyLog[3, E^(a + b*x)])/b - ( d*PolyLog[4, E^(a + b*x)])/b^2))/b))/b)
3.1.23.3.1 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[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]
Leaf count of result is larger than twice the leaf count of optimal. \(540\) vs. \(2(142)=284\).
Time = 1.86 (sec) , antiderivative size = 541, normalized size of antiderivative = 3.63
method | result | size |
risch | \(\frac {3 d^{3} \operatorname {polylog}\left (2, {\mathrm e}^{b x +a}\right ) x^{2}}{b^{2}}-\frac {6 d^{3} \operatorname {polylog}\left (3, {\mathrm e}^{b x +a}\right ) x}{b^{3}}-\frac {d^{3} \ln \left ({\mathrm e}^{b x +a}+1\right ) x^{3}}{b}-\frac {d^{3} \ln \left ({\mathrm e}^{b x +a}+1\right ) a^{3}}{b^{4}}-\frac {3 d^{3} \operatorname {polylog}\left (2, -{\mathrm e}^{b x +a}\right ) x^{2}}{b^{2}}+\frac {6 d^{3} \operatorname {polylog}\left (3, -{\mathrm e}^{b x +a}\right ) x}{b^{3}}-\frac {6 c \,d^{2} \operatorname {polylog}\left (3, {\mathrm e}^{b x +a}\right )}{b^{3}}+\frac {6 c \,d^{2} \operatorname {polylog}\left (3, -{\mathrm e}^{b x +a}\right )}{b^{3}}+\frac {3 c^{2} d \operatorname {polylog}\left (2, {\mathrm e}^{b x +a}\right )}{b^{2}}-\frac {3 c^{2} d \operatorname {polylog}\left (2, -{\mathrm e}^{b x +a}\right )}{b^{2}}+\frac {2 d^{3} a^{3} \operatorname {arctanh}\left ({\mathrm e}^{b x +a}\right )}{b^{4}}+\frac {d^{3} \ln \left (1-{\mathrm e}^{b x +a}\right ) x^{3}}{b}+\frac {d^{3} \ln \left (1-{\mathrm e}^{b x +a}\right ) a^{3}}{b^{4}}-\frac {3 c^{2} d \ln \left ({\mathrm e}^{b x +a}+1\right ) a}{b^{2}}-\frac {6 d^{2} a^{2} c \,\operatorname {arctanh}\left ({\mathrm e}^{b x +a}\right )}{b^{3}}+\frac {6 d a \,c^{2} \operatorname {arctanh}\left ({\mathrm e}^{b x +a}\right )}{b^{2}}-\frac {6 c \,d^{2} \operatorname {polylog}\left (2, -{\mathrm e}^{b x +a}\right ) x}{b^{2}}+\frac {3 c \,d^{2} \ln \left (1-{\mathrm e}^{b x +a}\right ) x^{2}}{b}-\frac {3 c \,d^{2} \ln \left (1-{\mathrm e}^{b x +a}\right ) a^{2}}{b^{3}}+\frac {6 c \,d^{2} \operatorname {polylog}\left (2, {\mathrm e}^{b x +a}\right ) x}{b^{2}}-\frac {3 c \,d^{2} \ln \left ({\mathrm e}^{b x +a}+1\right ) x^{2}}{b}+\frac {3 c \,d^{2} \ln \left ({\mathrm e}^{b x +a}+1\right ) a^{2}}{b^{3}}+\frac {3 c^{2} d \ln \left (1-{\mathrm e}^{b x +a}\right ) x}{b}-\frac {2 c^{3} \operatorname {arctanh}\left ({\mathrm e}^{b x +a}\right )}{b}+\frac {6 d^{3} \operatorname {polylog}\left (4, {\mathrm e}^{b x +a}\right )}{b^{4}}-\frac {6 d^{3} \operatorname {polylog}\left (4, -{\mathrm e}^{b x +a}\right )}{b^{4}}+\frac {3 c^{2} d \ln \left (1-{\mathrm e}^{b x +a}\right ) a}{b^{2}}-\frac {3 c^{2} d \ln \left ({\mathrm e}^{b x +a}+1\right ) x}{b}\) | \(541\) |
3/b^2*d^3*polylog(2,exp(b*x+a))*x^2-6/b^3*d^3*polylog(3,exp(b*x+a))*x-1/b* d^3*ln(exp(b*x+a)+1)*x^3-1/b^4*d^3*ln(exp(b*x+a)+1)*a^3-3/b^2*d^3*polylog( 2,-exp(b*x+a))*x^2+6/b^3*d^3*polylog(3,-exp(b*x+a))*x-6/b^3*c*d^2*polylog( 3,exp(b*x+a))+6/b^3*c*d^2*polylog(3,-exp(b*x+a))+3/b^2*c^2*d*polylog(2,exp (b*x+a))-3/b^2*c^2*d*polylog(2,-exp(b*x+a))+2/b^4*d^3*a^3*arctanh(exp(b*x+ a))+1/b*d^3*ln(1-exp(b*x+a))*x^3+1/b^4*d^3*ln(1-exp(b*x+a))*a^3-3/b^2*c^2* d*ln(exp(b*x+a)+1)*a-6/b^3*d^2*a^2*c*arctanh(exp(b*x+a))+6/b^2*d*a*c^2*arc tanh(exp(b*x+a))-6/b^2*c*d^2*polylog(2,-exp(b*x+a))*x+3/b*c*d^2*ln(1-exp(b *x+a))*x^2-3/b^3*c*d^2*ln(1-exp(b*x+a))*a^2+6/b^2*c*d^2*polylog(2,exp(b*x+ a))*x-3/b*c*d^2*ln(exp(b*x+a)+1)*x^2+3/b^3*c*d^2*ln(exp(b*x+a)+1)*a^2+3/b* c^2*d*ln(1-exp(b*x+a))*x-2/b*c^3*arctanh(exp(b*x+a))+6*d^3*polylog(4,exp(b *x+a))/b^4-6*d^3*polylog(4,-exp(b*x+a))/b^4+3/b^2*c^2*d*ln(1-exp(b*x+a))*a -3/b*c^2*d*ln(exp(b*x+a)+1)*x
Leaf count of result is larger than twice the leaf count of optimal. 396 vs. \(2 (140) = 280\).
Time = 0.25 (sec) , antiderivative size = 396, normalized size of antiderivative = 2.66 \[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=\frac {6 \, d^{3} {\rm polylog}\left (4, \cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right ) - 6 \, d^{3} {\rm polylog}\left (4, -\cosh \left (b x + a\right ) - \sinh \left (b x + a\right )\right ) + 3 \, {\left (b^{2} d^{3} x^{2} + 2 \, b^{2} c d^{2} x + b^{2} c^{2} d\right )} {\rm Li}_2\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right ) - 3 \, {\left (b^{2} d^{3} x^{2} + 2 \, b^{2} c d^{2} x + b^{2} c^{2} d\right )} {\rm Li}_2\left (-\cosh \left (b x + a\right ) - \sinh \left (b x + a\right )\right ) - {\left (b^{3} d^{3} x^{3} + 3 \, b^{3} c d^{2} x^{2} + 3 \, b^{3} c^{2} d x + b^{3} c^{3}\right )} \log \left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right ) + 1\right ) + {\left (b^{3} c^{3} - 3 \, a b^{2} c^{2} d + 3 \, a^{2} b c d^{2} - a^{3} d^{3}\right )} \log \left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right ) - 1\right ) + {\left (b^{3} d^{3} x^{3} + 3 \, b^{3} c d^{2} x^{2} + 3 \, b^{3} c^{2} d x + 3 \, a b^{2} c^{2} d - 3 \, a^{2} b c d^{2} + a^{3} d^{3}\right )} \log \left (-\cosh \left (b x + a\right ) - \sinh \left (b x + a\right ) + 1\right ) - 6 \, {\left (b d^{3} x + b c d^{2}\right )} {\rm polylog}\left (3, \cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right ) + 6 \, {\left (b d^{3} x + b c d^{2}\right )} {\rm polylog}\left (3, -\cosh \left (b x + a\right ) - \sinh \left (b x + a\right )\right )}{b^{4}} \]
(6*d^3*polylog(4, cosh(b*x + a) + sinh(b*x + a)) - 6*d^3*polylog(4, -cosh( b*x + a) - sinh(b*x + a)) + 3*(b^2*d^3*x^2 + 2*b^2*c*d^2*x + b^2*c^2*d)*di log(cosh(b*x + a) + sinh(b*x + a)) - 3*(b^2*d^3*x^2 + 2*b^2*c*d^2*x + b^2* c^2*d)*dilog(-cosh(b*x + a) - sinh(b*x + a)) - (b^3*d^3*x^3 + 3*b^3*c*d^2* x^2 + 3*b^3*c^2*d*x + b^3*c^3)*log(cosh(b*x + a) + sinh(b*x + a) + 1) + (b ^3*c^3 - 3*a*b^2*c^2*d + 3*a^2*b*c*d^2 - a^3*d^3)*log(cosh(b*x + a) + sinh (b*x + a) - 1) + (b^3*d^3*x^3 + 3*b^3*c*d^2*x^2 + 3*b^3*c^2*d*x + 3*a*b^2* c^2*d - 3*a^2*b*c*d^2 + a^3*d^3)*log(-cosh(b*x + a) - sinh(b*x + a) + 1) - 6*(b*d^3*x + b*c*d^2)*polylog(3, cosh(b*x + a) + sinh(b*x + a)) + 6*(b*d^ 3*x + b*c*d^2)*polylog(3, -cosh(b*x + a) - sinh(b*x + a)))/b^4
\[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=\int \left (c + d x\right )^{3} \operatorname {csch}{\left (a + b x \right )}\, dx \]
Leaf count of result is larger than twice the leaf count of optimal. 333 vs. \(2 (140) = 280\).
Time = 0.26 (sec) , antiderivative size = 333, normalized size of antiderivative = 2.23 \[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=-c^{3} {\left (\frac {\log \left (e^{\left (-b x - a\right )} + 1\right )}{b} - \frac {\log \left (e^{\left (-b x - a\right )} - 1\right )}{b}\right )} - \frac {3 \, {\left (b x \log \left (e^{\left (b x + a\right )} + 1\right ) + {\rm Li}_2\left (-e^{\left (b x + a\right )}\right )\right )} c^{2} d}{b^{2}} + \frac {3 \, {\left (b x \log \left (-e^{\left (b x + a\right )} + 1\right ) + {\rm Li}_2\left (e^{\left (b x + a\right )}\right )\right )} c^{2} d}{b^{2}} - \frac {3 \, {\left (b^{2} x^{2} \log \left (e^{\left (b x + a\right )} + 1\right ) + 2 \, b x {\rm Li}_2\left (-e^{\left (b x + a\right )}\right ) - 2 \, {\rm Li}_{3}(-e^{\left (b x + a\right )})\right )} c d^{2}}{b^{3}} + \frac {3 \, {\left (b^{2} x^{2} \log \left (-e^{\left (b x + a\right )} + 1\right ) + 2 \, b x {\rm Li}_2\left (e^{\left (b x + a\right )}\right ) - 2 \, {\rm Li}_{3}(e^{\left (b x + a\right )})\right )} c d^{2}}{b^{3}} - \frac {{\left (b^{3} x^{3} \log \left (e^{\left (b x + a\right )} + 1\right ) + 3 \, b^{2} x^{2} {\rm Li}_2\left (-e^{\left (b x + a\right )}\right ) - 6 \, b x {\rm Li}_{3}(-e^{\left (b x + a\right )}) + 6 \, {\rm Li}_{4}(-e^{\left (b x + a\right )})\right )} d^{3}}{b^{4}} + \frac {{\left (b^{3} x^{3} \log \left (-e^{\left (b x + a\right )} + 1\right ) + 3 \, b^{2} x^{2} {\rm Li}_2\left (e^{\left (b x + a\right )}\right ) - 6 \, b x {\rm Li}_{3}(e^{\left (b x + a\right )}) + 6 \, {\rm Li}_{4}(e^{\left (b x + a\right )})\right )} d^{3}}{b^{4}} \]
-c^3*(log(e^(-b*x - a) + 1)/b - log(e^(-b*x - a) - 1)/b) - 3*(b*x*log(e^(b *x + a) + 1) + dilog(-e^(b*x + a)))*c^2*d/b^2 + 3*(b*x*log(-e^(b*x + a) + 1) + dilog(e^(b*x + a)))*c^2*d/b^2 - 3*(b^2*x^2*log(e^(b*x + a) + 1) + 2*b *x*dilog(-e^(b*x + a)) - 2*polylog(3, -e^(b*x + a)))*c*d^2/b^3 + 3*(b^2*x^ 2*log(-e^(b*x + a) + 1) + 2*b*x*dilog(e^(b*x + a)) - 2*polylog(3, e^(b*x + a)))*c*d^2/b^3 - (b^3*x^3*log(e^(b*x + a) + 1) + 3*b^2*x^2*dilog(-e^(b*x + a)) - 6*b*x*polylog(3, -e^(b*x + a)) + 6*polylog(4, -e^(b*x + a)))*d^3/b ^4 + (b^3*x^3*log(-e^(b*x + a) + 1) + 3*b^2*x^2*dilog(e^(b*x + a)) - 6*b*x *polylog(3, e^(b*x + a)) + 6*polylog(4, e^(b*x + a)))*d^3/b^4
\[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=\int { {\left (d x + c\right )}^{3} \operatorname {csch}\left (b x + a\right ) \,d x } \]
Timed out. \[ \int (c+d x)^3 \text {csch}(a+b x) \, dx=\int \frac {{\left (c+d\,x\right )}^3}{\mathrm {sinh}\left (a+b\,x\right )} \,d x \]