\(\int \frac {1}{a+b \text {arccosh}(c x)} \, dx\) [135]

Optimal result

Integrand size = 10, antiderivative size = 54 \[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=-\frac {\text {Chi}\left (\frac {a+b \text {arccosh}(c x)}{b}\right ) \sinh \left (\frac {a}{b}\right )}{b c}+\frac {\cosh \left (\frac {a}{b}\right ) \text {Shi}\left (\frac {a+b \text {arccosh}(c x)}{b}\right )}{b c} \] Output:

-Chi((a+b*arccosh(c*x))/b)*sinh(a/b)/b/c+cosh(a/b)*Shi((a+b*arccosh(c*x))/ 
b)/b/c
 

Mathematica [A] (verified)

Time = 0.05 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.85 \[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=-\frac {\text {Chi}\left (\frac {a}{b}+\text {arccosh}(c x)\right ) \sinh \left (\frac {a}{b}\right )-\cosh \left (\frac {a}{b}\right ) \text {Shi}\left (\frac {a}{b}+\text {arccosh}(c x)\right )}{b c} \] Input:

Integrate[(a + b*ArcCosh[c*x])^(-1),x]
 

Output:

-((CoshIntegral[a/b + ArcCosh[c*x]]*Sinh[a/b] - Cosh[a/b]*SinhIntegral[a/b 
 + ArcCosh[c*x]])/(b*c))
 

Rubi [C] (verified)

Result contains complex when optimal does not.

Time = 0.45 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.06, number of steps used = 11, number of rules used = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.000, Rules used = {6296, 25, 3042, 26, 3784, 26, 3042, 26, 3779, 3782}

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.

\(\displaystyle \int \frac {1}{a+b \text {arccosh}(c x)} \, dx\)

\(\Big \downarrow \) 6296

\(\displaystyle \frac {\int -\frac {\sinh \left (\frac {a}{b}-\frac {a+b \text {arccosh}(c x)}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))}{b c}\)

\(\Big \downarrow \) 25

\(\displaystyle -\frac {\int \frac {\sinh \left (\frac {a}{b}-\frac {a+b \text {arccosh}(c x)}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))}{b c}\)

\(\Big \downarrow \) 3042

\(\displaystyle -\frac {\int -\frac {i \sin \left (\frac {i a}{b}-\frac {i (a+b \text {arccosh}(c x))}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))}{b c}\)

\(\Big \downarrow \) 26

\(\displaystyle \frac {i \int \frac {\sin \left (\frac {i a}{b}-\frac {i (a+b \text {arccosh}(c x))}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))}{b c}\)

\(\Big \downarrow \) 3784

\(\displaystyle \frac {i \left (i \sinh \left (\frac {a}{b}\right ) \int \frac {\cosh \left (\frac {a+b \text {arccosh}(c x)}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))+\cosh \left (\frac {a}{b}\right ) \int -\frac {i \sinh \left (\frac {a+b \text {arccosh}(c x)}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))\right )}{b c}\)

\(\Big \downarrow \) 26

\(\displaystyle \frac {i \left (i \sinh \left (\frac {a}{b}\right ) \int \frac {\cosh \left (\frac {a+b \text {arccosh}(c x)}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))-i \cosh \left (\frac {a}{b}\right ) \int \frac {\sinh \left (\frac {a+b \text {arccosh}(c x)}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))\right )}{b c}\)

\(\Big \downarrow \) 3042

\(\displaystyle \frac {i \left (i \sinh \left (\frac {a}{b}\right ) \int \frac {\sin \left (\frac {i (a+b \text {arccosh}(c x))}{b}+\frac {\pi }{2}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))-i \cosh \left (\frac {a}{b}\right ) \int -\frac {i \sin \left (\frac {i (a+b \text {arccosh}(c x))}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))\right )}{b c}\)

\(\Big \downarrow \) 26

\(\displaystyle \frac {i \left (i \sinh \left (\frac {a}{b}\right ) \int \frac {\sin \left (\frac {i (a+b \text {arccosh}(c x))}{b}+\frac {\pi }{2}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))-\cosh \left (\frac {a}{b}\right ) \int \frac {\sin \left (\frac {i (a+b \text {arccosh}(c x))}{b}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))\right )}{b c}\)

\(\Big \downarrow \) 3779

\(\displaystyle \frac {i \left (i \sinh \left (\frac {a}{b}\right ) \int \frac {\sin \left (\frac {i (a+b \text {arccosh}(c x))}{b}+\frac {\pi }{2}\right )}{a+b \text {arccosh}(c x)}d(a+b \text {arccosh}(c x))-i \cosh \left (\frac {a}{b}\right ) \text {Shi}\left (\frac {a+b \text {arccosh}(c x)}{b}\right )\right )}{b c}\)

\(\Big \downarrow \) 3782

\(\displaystyle \frac {i \left (i \sinh \left (\frac {a}{b}\right ) \text {Chi}\left (\frac {a+b \text {arccosh}(c x)}{b}\right )-i \cosh \left (\frac {a}{b}\right ) \text {Shi}\left (\frac {a+b \text {arccosh}(c x)}{b}\right )\right )}{b c}\)

Input:

Int[(a + b*ArcCosh[c*x])^(-1),x]
 

Output:

(I*(I*CoshIntegral[(a + b*ArcCosh[c*x])/b]*Sinh[a/b] - I*Cosh[a/b]*SinhInt 
egral[(a + b*ArcCosh[c*x])/b]))/(b*c)
 

Defintions of rubi rules used

rule 25

Int[-(Fx_), x_Symbol] :> Simp[Identity[-1]   Int[Fx, x], x]
 

rule 26

Int[(Complex[0, a_])*(Fx_), x_Symbol] :> Simp[(Complex[Identity[0], a])   I 
nt[Fx, x], x] /; FreeQ[a, x] && EqQ[a^2, 1]
 

rule 3042

Int[u_, x_Symbol] :> Int[DeactivateTrig[u, x], x] /; FunctionOfTrigOfLinear 
Q[u, x]
 

rule 3779

Int[sin[(e_.) + (Complex[0, fz_])*(f_.)*(x_)]/((c_.) + (d_.)*(x_)), x_Symbo 
l] :> Simp[I*(SinhIntegral[c*f*(fz/d) + f*fz*x]/d), x] /; FreeQ[{c, d, e, f 
, fz}, x] && EqQ[d*e - c*f*fz*I, 0]
 

rule 3782

Int[sin[(e_.) + (Complex[0, fz_])*(f_.)*(x_)]/((c_.) + (d_.)*(x_)), x_Symbo 
l] :> Simp[CoshIntegral[c*f*(fz/d) + f*fz*x]/d, x] /; FreeQ[{c, d, e, f, fz 
}, x] && EqQ[d*(e - Pi/2) - c*f*fz*I, 0]
 

rule 3784

Int[sin[(e_.) + (f_.)*(x_)]/((c_.) + (d_.)*(x_)), x_Symbol] :> Simp[Cos[(d* 
e - c*f)/d]   Int[Sin[c*(f/d) + f*x]/(c + d*x), x], x] + Simp[Sin[(d*e - c* 
f)/d]   Int[Cos[c*(f/d) + f*x]/(c + d*x), x], x] /; FreeQ[{c, d, e, f}, x] 
&& NeQ[d*e - c*f, 0]
 

rule 6296

Int[((a_.) + ArcCosh[(c_.)*(x_)]*(b_.))^(n_), x_Symbol] :> Simp[1/(b*c)   S 
ubst[Int[x^n*Sinh[-a/b + x/b], x], x, a + b*ArcCosh[c*x]], x] /; FreeQ[{a, 
b, c, n}, x]
 

Maple [A] (verified)

Time = 0.03 (sec) , antiderivative size = 56, normalized size of antiderivative = 1.04

method	result	size
derivativedivides	\(\frac {\frac {{\mathrm e}^{\frac {a}{b}} \operatorname {expIntegral}_{1}\left (\operatorname {arccosh}\left (c x \right )+\frac {a}{b}\right )}{2 b}-\frac {{\mathrm e}^{-\frac {a}{b}} \operatorname {expIntegral}_{1}\left (-\operatorname {arccosh}\left (c x \right )-\frac {a}{b}\right )}{2 b}}{c}\)	\(56\)
default	\(\frac {\frac {{\mathrm e}^{\frac {a}{b}} \operatorname {expIntegral}_{1}\left (\operatorname {arccosh}\left (c x \right )+\frac {a}{b}\right )}{2 b}-\frac {{\mathrm e}^{-\frac {a}{b}} \operatorname {expIntegral}_{1}\left (-\operatorname {arccosh}\left (c x \right )-\frac {a}{b}\right )}{2 b}}{c}\)	\(56\)

Input:

int(1/(a+b*arccosh(c*x)),x,method=_RETURNVERBOSE)
 

Output:

1/c*(1/2/b*exp(a/b)*Ei(1,arccosh(c*x)+a/b)-1/2/b*exp(-a/b)*Ei(1,-arccosh(c 
*x)-a/b))
 

Fricas [F]

\[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=\int { \frac {1}{b \operatorname {arcosh}\left (c x\right ) + a} \,d x } \] Input:

integrate(1/(a+b*arccosh(c*x)),x, algorithm="fricas")
 

Output:

integral(1/(b*arccosh(c*x) + a), x)
 

Sympy [F]

\[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=\int \frac {1}{a + b \operatorname {acosh}{\left (c x \right )}}\, dx \] Input:

integrate(1/(a+b*acosh(c*x)),x)
 

Output:

Integral(1/(a + b*acosh(c*x)), x)
 

Maxima [F]

\[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=\int { \frac {1}{b \operatorname {arcosh}\left (c x\right ) + a} \,d x } \] Input:

integrate(1/(a+b*arccosh(c*x)),x, algorithm="maxima")
                                                                                    
                                                                                    
 

Output:

integrate(1/(b*arccosh(c*x) + a), x)
 

Giac [F]

\[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=\int { \frac {1}{b \operatorname {arcosh}\left (c x\right ) + a} \,d x } \] Input:

integrate(1/(a+b*arccosh(c*x)),x, algorithm="giac")
 

Output:

integrate(1/(b*arccosh(c*x) + a), x)
 

Mupad [F(-1)]

Timed out. \[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=\int \frac {1}{a+b\,\mathrm {acosh}\left (c\,x\right )} \,d x \] Input:

int(1/(a + b*acosh(c*x)),x)
 

Output:

int(1/(a + b*acosh(c*x)), x)
 

Reduce [F]

\[ \int \frac {1}{a+b \text {arccosh}(c x)} \, dx=\int \frac {1}{\mathit {acosh} \left (c x \right ) b +a}d x \] Input:

int(1/(a+b*acosh(c*x)),x)
 

Output:

int(1/(acosh(c*x)*b + a),x)