Integrand size = 15, antiderivative size = 76 \[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=\frac {b x^2}{2}+x \coth ^{-1}(1-d-d \tanh (a+b x))-\frac {1}{2} x \log \left (1+(1-d) e^{2 a+2 b x}\right )-\frac {\operatorname {PolyLog}\left (2,-\left ((1-d) e^{2 a+2 b x}\right )\right )}{4 b} \]
1/2*b*x^2+x*arccoth(1-d-d*tanh(b*x+a))-1/2*x*ln(1+(1-d)*exp(2*b*x+2*a))-1/ 4*polylog(2,-(1-d)*exp(2*b*x+2*a))/b
Time = 0.09 (sec) , antiderivative size = 66, normalized size of antiderivative = 0.87 \[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=x \coth ^{-1}(1-d-d \tanh (a+b x))+\frac {-2 b x \log \left (1-\frac {e^{-2 (a+b x)}}{-1+d}\right )+\operatorname {PolyLog}\left (2,\frac {e^{-2 (a+b x)}}{-1+d}\right )}{4 b} \]
x*ArcCoth[1 - d - d*Tanh[a + b*x]] + (-2*b*x*Log[1 - 1/((-1 + d)*E^(2*(a + b*x)))] + PolyLog[2, 1/((-1 + d)*E^(2*(a + b*x)))])/(4*b)
Time = 0.47 (sec) , antiderivative size = 103, normalized size of antiderivative = 1.36, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {6786, 2615, 2620, 2715, 2838}
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.
\(\displaystyle \int \coth ^{-1}(d (-\tanh (a+b x))-d+1) \, dx\) |
\(\Big \downarrow \) 6786 |
\(\displaystyle b \int \frac {x}{e^{2 a+2 b x} (1-d)+1}dx+x \coth ^{-1}(d (-\tanh (a+b x))-d+1)\) |
\(\Big \downarrow \) 2615 |
\(\displaystyle b \left (\frac {x^2}{2}-(1-d) \int \frac {e^{2 a+2 b x} x}{e^{2 a+2 b x} (1-d)+1}dx\right )+x \coth ^{-1}(d (-\tanh (a+b x))-d+1)\) |
\(\Big \downarrow \) 2620 |
\(\displaystyle b \left (\frac {x^2}{2}-(1-d) \left (\frac {x \log \left ((1-d) e^{2 a+2 b x}+1\right )}{2 b (1-d)}-\frac {\int \log \left (e^{2 a+2 b x} (1-d)+1\right )dx}{2 b (1-d)}\right )\right )+x \coth ^{-1}(d (-\tanh (a+b x))-d+1)\) |
\(\Big \downarrow \) 2715 |
\(\displaystyle b \left (\frac {x^2}{2}-(1-d) \left (\frac {x \log \left ((1-d) e^{2 a+2 b x}+1\right )}{2 b (1-d)}-\frac {\int e^{-2 a-2 b x} \log \left (e^{2 a+2 b x} (1-d)+1\right )de^{2 a+2 b x}}{4 b^2 (1-d)}\right )\right )+x \coth ^{-1}(d (-\tanh (a+b x))-d+1)\) |
\(\Big \downarrow \) 2838 |
\(\displaystyle b \left (\frac {x^2}{2}-(1-d) \left (\frac {\operatorname {PolyLog}\left (2,-\left ((1-d) e^{2 a+2 b x}\right )\right )}{4 b^2 (1-d)}+\frac {x \log \left ((1-d) e^{2 a+2 b x}+1\right )}{2 b (1-d)}\right )\right )+x \coth ^{-1}(d (-\tanh (a+b x))-d+1)\) |
x*ArcCoth[1 - d - d*Tanh[a + b*x]] + b*(x^2/2 - (1 - d)*((x*Log[1 + (1 - d )*E^(2*a + 2*b*x)])/(2*b*(1 - d)) + PolyLog[2, -((1 - d)*E^(2*a + 2*b*x))] /(4*b^2*(1 - d))))
3.3.15.3.1 Defintions of rubi rules used
Int[((c_.) + (d_.)*(x_))^(m_.)/((a_) + (b_.)*((F_)^((g_.)*((e_.) + (f_.)*(x _))))^(n_.)), x_Symbol] :> Simp[(c + d*x)^(m + 1)/(a*d*(m + 1)), x] - Simp[ b/a Int[(c + d*x)^m*((F^(g*(e + f*x)))^n/(a + b*(F^(g*(e + f*x)))^n)), x] , x] /; FreeQ[{F, a, b, c, d, e, f, g, n}, x] && IGtQ[m, 0]
Int[(((F_)^((g_.)*((e_.) + (f_.)*(x_))))^(n_.)*((c_.) + (d_.)*(x_))^(m_.))/ ((a_) + (b_.)*((F_)^((g_.)*((e_.) + (f_.)*(x_))))^(n_.)), x_Symbol] :> Simp [((c + d*x)^m/(b*f*g*n*Log[F]))*Log[1 + b*((F^(g*(e + f*x)))^n/a)], x] - Si mp[d*(m/(b*f*g*n*Log[F])) Int[(c + d*x)^(m - 1)*Log[1 + b*((F^(g*(e + f*x )))^n/a)], x], x] /; FreeQ[{F, a, b, c, d, e, f, g, n}, x] && IGtQ[m, 0]
Int[Log[(a_) + (b_.)*((F_)^((e_.)*((c_.) + (d_.)*(x_))))^(n_.)], x_Symbol] :> Simp[1/(d*e*n*Log[F]) Subst[Int[Log[a + b*x]/x, x], x, (F^(e*(c + d*x) ))^n], x] /; FreeQ[{F, a, b, c, d, e, n}, x] && GtQ[a, 0]
Int[Log[(c_.)*((d_) + (e_.)*(x_)^(n_.))]/(x_), x_Symbol] :> Simp[-PolyLog[2 , (-c)*e*x^n]/n, x] /; FreeQ[{c, d, e, n}, x] && EqQ[c*d, 1]
Int[ArcCoth[(c_.) + (d_.)*Tanh[(a_.) + (b_.)*(x_)]], x_Symbol] :> Simp[x*Ar cCoth[c + d*Tanh[a + b*x]], x] + Simp[b Int[x/(c - d + c*E^(2*a + 2*b*x)) , x], x] /; FreeQ[{a, b, c, d}, x] && EqQ[(c - d)^2, 1]
Leaf count of result is larger than twice the leaf count of optimal. \(270\) vs. \(2(68)=136\).
Time = 1.63 (sec) , antiderivative size = 271, normalized size of antiderivative = 3.57
method | result | size |
derivativedivides | \(-\frac {-\frac {\operatorname {arccoth}\left (1-d -d \tanh \left (b x +a \right )\right ) d \ln \left (-d \tanh \left (b x +a \right )-d \right )}{2}+\frac {\operatorname {arccoth}\left (1-d -d \tanh \left (b x +a \right )\right ) d \ln \left (-d \tanh \left (b x +a \right )+d \right )}{2}-\frac {d^{2} \left (\frac {-\frac {\operatorname {dilog}\left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right )}{2}-\frac {\ln \left (-d \tanh \left (b x +a \right )-d \right ) \ln \left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right )}{2}+\frac {\ln \left (-d \tanh \left (b x +a \right )-d \right )^{2}}{4}}{d}-\frac {-\frac {\operatorname {dilog}\left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2}-\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2}+\frac {\operatorname {dilog}\left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2}+\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2}}{d}\right )}{2}}{b d}\) | \(271\) |
default | \(-\frac {-\frac {\operatorname {arccoth}\left (1-d -d \tanh \left (b x +a \right )\right ) d \ln \left (-d \tanh \left (b x +a \right )-d \right )}{2}+\frac {\operatorname {arccoth}\left (1-d -d \tanh \left (b x +a \right )\right ) d \ln \left (-d \tanh \left (b x +a \right )+d \right )}{2}-\frac {d^{2} \left (\frac {-\frac {\operatorname {dilog}\left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right )}{2}-\frac {\ln \left (-d \tanh \left (b x +a \right )-d \right ) \ln \left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right )}{2}+\frac {\ln \left (-d \tanh \left (b x +a \right )-d \right )^{2}}{4}}{d}-\frac {-\frac {\operatorname {dilog}\left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2}-\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2}+\frac {\operatorname {dilog}\left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2}+\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2}}{d}\right )}{2}}{b d}\) | \(271\) |
risch | \(\text {Expression too large to display}\) | \(1124\) |
-1/b/d*(-1/2*arccoth(1-d-d*tanh(b*x+a))*d*ln(-d*tanh(b*x+a)-d)+1/2*arccoth (1-d-d*tanh(b*x+a))*d*ln(-d*tanh(b*x+a)+d)-1/2*d^2*(1/d*(-1/2*dilog(-1/2*d *tanh(b*x+a)-1/2*d+1)-1/2*ln(-d*tanh(b*x+a)-d)*ln(-1/2*d*tanh(b*x+a)-1/2*d +1)+1/4*ln(-d*tanh(b*x+a)-d)^2)-1/d*(-1/2*dilog((-d*tanh(b*x+a)-d+2)/(-2*d +2))-1/2*ln(-d*tanh(b*x+a)+d)*ln((-d*tanh(b*x+a)-d+2)/(-2*d+2))+1/2*dilog( -1/2*(-d*tanh(b*x+a)-d)/d)+1/2*ln(-d*tanh(b*x+a)+d)*ln(-1/2*(-d*tanh(b*x+a )-d)/d))))
Leaf count of result is larger than twice the leaf count of optimal. 227 vs. \(2 (63) = 126\).
Time = 0.29 (sec) , antiderivative size = 227, normalized size of antiderivative = 2.99 \[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=\frac {b^{2} x^{2} - b x \log \left (\frac {d \cosh \left (b x + a\right ) + d \sinh \left (b x + a\right )}{{\left (d - 2\right )} \cosh \left (b x + a\right ) + d \sinh \left (b x + a\right )}\right ) + a \log \left (2 \, {\left (d - 1\right )} \cosh \left (b x + a\right ) + 2 \, {\left (d - 1\right )} \sinh \left (b x + a\right ) + 2 \, \sqrt {d - 1}\right ) + a \log \left (2 \, {\left (d - 1\right )} \cosh \left (b x + a\right ) + 2 \, {\left (d - 1\right )} \sinh \left (b x + a\right ) - 2 \, \sqrt {d - 1}\right ) - {\left (b x + a\right )} \log \left (\sqrt {d - 1} {\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )} + 1\right ) - {\left (b x + a\right )} \log \left (-\sqrt {d - 1} {\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )} + 1\right ) - {\rm Li}_2\left (\sqrt {d - 1} {\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )}\right ) - {\rm Li}_2\left (-\sqrt {d - 1} {\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )}\right )}{2 \, b} \]
1/2*(b^2*x^2 - b*x*log((d*cosh(b*x + a) + d*sinh(b*x + a))/((d - 2)*cosh(b *x + a) + d*sinh(b*x + a))) + a*log(2*(d - 1)*cosh(b*x + a) + 2*(d - 1)*si nh(b*x + a) + 2*sqrt(d - 1)) + a*log(2*(d - 1)*cosh(b*x + a) + 2*(d - 1)*s inh(b*x + a) - 2*sqrt(d - 1)) - (b*x + a)*log(sqrt(d - 1)*(cosh(b*x + a) + sinh(b*x + a)) + 1) - (b*x + a)*log(-sqrt(d - 1)*(cosh(b*x + a) + sinh(b* x + a)) + 1) - dilog(sqrt(d - 1)*(cosh(b*x + a) + sinh(b*x + a))) - dilog( -sqrt(d - 1)*(cosh(b*x + a) + sinh(b*x + a))))/b
\[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=- \int \operatorname {acoth}{\left (d \tanh {\left (a + b x \right )} + d - 1 \right )}\, dx \]
Time = 0.76 (sec) , antiderivative size = 73, normalized size of antiderivative = 0.96 \[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=\frac {1}{4} \, b d {\left (\frac {2 \, x^{2}}{d} - \frac {2 \, b x \log \left (-{\left (d - 1\right )} e^{\left (2 \, b x + 2 \, a\right )} + 1\right ) + {\rm Li}_2\left ({\left (d - 1\right )} e^{\left (2 \, b x + 2 \, a\right )}\right )}{b^{2} d}\right )} - x \operatorname {arcoth}\left (d \tanh \left (b x + a\right ) + d - 1\right ) \]
1/4*b*d*(2*x^2/d - (2*b*x*log(-(d - 1)*e^(2*b*x + 2*a) + 1) + dilog((d - 1 )*e^(2*b*x + 2*a)))/(b^2*d)) - x*arccoth(d*tanh(b*x + a) + d - 1)
\[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=\int { \operatorname {arcoth}\left (-d \tanh \left (b x + a\right ) - d + 1\right ) \,d x } \]
Timed out. \[ \int \coth ^{-1}(1-d-d \tanh (a+b x)) \, dx=\int -\mathrm {acoth}\left (d+d\,\mathrm {tanh}\left (a+b\,x\right )-1\right ) \,d x \]