3.159 \(\int \frac{1}{(a+b \cosh ^{-1}(c x))^{5/2}} \, dx\)

Optimal. Leaf size=148 \[ -\frac{2 \sqrt{\pi } e^{a/b} \text{Erf}\left (\frac{\sqrt{a+b \cosh ^{-1}(c x)}}{\sqrt{b}}\right )}{3 b^{5/2} c}+\frac{2 \sqrt{\pi } e^{-\frac{a}{b}} \text{Erfi}\left (\frac{\sqrt{a+b \cosh ^{-1}(c x)}}{\sqrt{b}}\right )}{3 b^{5/2} c}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}-\frac{2 \sqrt{c x-1} \sqrt{c x+1}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}} \]

[Out]

(-2*Sqrt[-1 + c*x]*Sqrt[1 + c*x])/(3*b*c*(a + b*ArcCosh[c*x])^(3/2)) - (4*x)/(3*b^2*Sqrt[a + b*ArcCosh[c*x]])
- (2*E^(a/b)*Sqrt[Pi]*Erf[Sqrt[a + b*ArcCosh[c*x]]/Sqrt[b]])/(3*b^(5/2)*c) + (2*Sqrt[Pi]*Erfi[Sqrt[a + b*ArcCo
sh[c*x]]/Sqrt[b]])/(3*b^(5/2)*c*E^(a/b))

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Rubi [A]  time = 0.455902, antiderivative size = 148, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 7, integrand size = 12, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.583, Rules used = {5656, 5775, 5658, 3308, 2180, 2205, 2204} \[ -\frac{2 \sqrt{\pi } e^{a/b} \text{Erf}\left (\frac{\sqrt{a+b \cosh ^{-1}(c x)}}{\sqrt{b}}\right )}{3 b^{5/2} c}+\frac{2 \sqrt{\pi } e^{-\frac{a}{b}} \text{Erfi}\left (\frac{\sqrt{a+b \cosh ^{-1}(c x)}}{\sqrt{b}}\right )}{3 b^{5/2} c}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}-\frac{2 \sqrt{c x-1} \sqrt{c x+1}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}} \]

Antiderivative was successfully verified.

[In]

Int[(a + b*ArcCosh[c*x])^(-5/2),x]

[Out]

(-2*Sqrt[-1 + c*x]*Sqrt[1 + c*x])/(3*b*c*(a + b*ArcCosh[c*x])^(3/2)) - (4*x)/(3*b^2*Sqrt[a + b*ArcCosh[c*x]])
- (2*E^(a/b)*Sqrt[Pi]*Erf[Sqrt[a + b*ArcCosh[c*x]]/Sqrt[b]])/(3*b^(5/2)*c) + (2*Sqrt[Pi]*Erfi[Sqrt[a + b*ArcCo
sh[c*x]]/Sqrt[b]])/(3*b^(5/2)*c*E^(a/b))

Rule 5656

Int[((a_.) + ArcCosh[(c_.)*(x_)]*(b_.))^(n_), x_Symbol] :> Simp[(Sqrt[-1 + c*x]*Sqrt[1 + c*x]*(a + b*ArcCosh[c
*x])^(n + 1))/(b*c*(n + 1)), x] - Dist[c/(b*(n + 1)), Int[(x*(a + b*ArcCosh[c*x])^(n + 1))/(Sqrt[-1 + c*x]*Sqr
t[1 + c*x]), x], x] /; FreeQ[{a, b, c}, x] && LtQ[n, -1]

Rule 5775

Int[(((a_.) + ArcCosh[(c_.)*(x_)]*(b_.))^(n_)*((f_.)*(x_))^(m_.))/(Sqrt[(d1_) + (e1_.)*(x_)]*Sqrt[(d2_) + (e2_
.)*(x_)]), x_Symbol] :> Simp[((f*x)^m*(a + b*ArcCosh[c*x])^(n + 1))/(b*c*Sqrt[-(d1*d2)]*(n + 1)), x] - Dist[(f
*m)/(b*c*Sqrt[-(d1*d2)]*(n + 1)), Int[(f*x)^(m - 1)*(a + b*ArcCosh[c*x])^(n + 1), x], x] /; FreeQ[{a, b, c, d1
, e1, d2, e2, f, m}, x] && EqQ[e1 - c*d1, 0] && EqQ[e2 + c*d2, 0] && LtQ[n, -1] && GtQ[d1, 0] && LtQ[d2, 0]

Rule 5658

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

Rule 3308

Int[((c_.) + (d_.)*(x_))^(m_.)*sin[(e_.) + (f_.)*(x_)], x_Symbol] :> Dist[I/2, Int[(c + d*x)^m/E^(I*(e + f*x))
, x], x] - Dist[I/2, Int[(c + d*x)^m*E^(I*(e + f*x)), x], x] /; FreeQ[{c, d, e, f, m}, x]

Rule 2180

Int[(F_)^((g_.)*((e_.) + (f_.)*(x_)))/Sqrt[(c_.) + (d_.)*(x_)], x_Symbol] :> Dist[2/d, Subst[Int[F^(g*(e - (c*
f)/d) + (f*g*x^2)/d), x], x, Sqrt[c + d*x]], x] /; FreeQ[{F, c, d, e, f, g}, x] &&  !$UseGamma === True

Rule 2205

Int[(F_)^((a_.) + (b_.)*((c_.) + (d_.)*(x_))^2), x_Symbol] :> Simp[(F^a*Sqrt[Pi]*Erf[(c + d*x)*Rt[-(b*Log[F]),
2]])/(2*d*Rt[-(b*Log[F]), 2]), x] /; FreeQ[{F, a, b, c, d}, x] && NegQ[b]

Rule 2204

Int[(F_)^((a_.) + (b_.)*((c_.) + (d_.)*(x_))^2), x_Symbol] :> Simp[(F^a*Sqrt[Pi]*Erfi[(c + d*x)*Rt[b*Log[F], 2
]])/(2*d*Rt[b*Log[F], 2]), x] /; FreeQ[{F, a, b, c, d}, x] && PosQ[b]

Rubi steps

\begin{align*} \int \frac{1}{\left (a+b \cosh ^{-1}(c x)\right )^{5/2}} \, dx &=-\frac{2 \sqrt{-1+c x} \sqrt{1+c x}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}}+\frac{(2 c) \int \frac{x}{\sqrt{-1+c x} \sqrt{1+c x} \left (a+b \cosh ^{-1}(c x)\right )^{3/2}} \, dx}{3 b}\\ &=-\frac{2 \sqrt{-1+c x} \sqrt{1+c x}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}+\frac{4 \int \frac{1}{\sqrt{a+b \cosh ^{-1}(c x)}} \, dx}{3 b^2}\\ &=-\frac{2 \sqrt{-1+c x} \sqrt{1+c x}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}-\frac{4 \operatorname{Subst}\left (\int \frac{\sinh \left (\frac{a}{b}-\frac{x}{b}\right )}{\sqrt{x}} \, dx,x,a+b \cosh ^{-1}(c x)\right )}{3 b^3 c}\\ &=-\frac{2 \sqrt{-1+c x} \sqrt{1+c x}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}-\frac{2 \operatorname{Subst}\left (\int \frac{e^{-i \left (\frac{i a}{b}-\frac{i x}{b}\right )}}{\sqrt{x}} \, dx,x,a+b \cosh ^{-1}(c x)\right )}{3 b^3 c}+\frac{2 \operatorname{Subst}\left (\int \frac{e^{i \left (\frac{i a}{b}-\frac{i x}{b}\right )}}{\sqrt{x}} \, dx,x,a+b \cosh ^{-1}(c x)\right )}{3 b^3 c}\\ &=-\frac{2 \sqrt{-1+c x} \sqrt{1+c x}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}-\frac{4 \operatorname{Subst}\left (\int e^{\frac{a}{b}-\frac{x^2}{b}} \, dx,x,\sqrt{a+b \cosh ^{-1}(c x)}\right )}{3 b^3 c}+\frac{4 \operatorname{Subst}\left (\int e^{-\frac{a}{b}+\frac{x^2}{b}} \, dx,x,\sqrt{a+b \cosh ^{-1}(c x)}\right )}{3 b^3 c}\\ &=-\frac{2 \sqrt{-1+c x} \sqrt{1+c x}}{3 b c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}}-\frac{4 x}{3 b^2 \sqrt{a+b \cosh ^{-1}(c x)}}-\frac{2 e^{a/b} \sqrt{\pi } \text{erf}\left (\frac{\sqrt{a+b \cosh ^{-1}(c x)}}{\sqrt{b}}\right )}{3 b^{5/2} c}+\frac{2 e^{-\frac{a}{b}} \sqrt{\pi } \text{erfi}\left (\frac{\sqrt{a+b \cosh ^{-1}(c x)}}{\sqrt{b}}\right )}{3 b^{5/2} c}\\ \end{align*}

Mathematica [A]  time = 1.01488, size = 192, normalized size = 1.3 \[ \frac{e^{-\frac{a+b \cosh ^{-1}(c x)}{b}} \left (2 e^{\frac{2 a}{b}+\cosh ^{-1}(c x)} \sqrt{\frac{a}{b}+\cosh ^{-1}(c x)} \left (a+b \cosh ^{-1}(c x)\right ) \text{Gamma}\left (\frac{1}{2},\frac{a}{b}+\cosh ^{-1}(c x)\right )-2 \left (b e^{\cosh ^{-1}(c x)} \left (-\frac{a+b \cosh ^{-1}(c x)}{b}\right )^{3/2} \text{Gamma}\left (\frac{1}{2},-\frac{a+b \cosh ^{-1}(c x)}{b}\right )+e^{a/b} \left (\left (e^{2 \cosh ^{-1}(c x)}+1\right ) \left (a+b \cosh ^{-1}(c x)\right )+b \sqrt{\frac{c x-1}{c x+1}} (c x+1) e^{\cosh ^{-1}(c x)}\right )\right )\right )}{3 b^2 c \left (a+b \cosh ^{-1}(c x)\right )^{3/2}} \]

Warning: Unable to verify antiderivative.

[In]

Integrate[(a + b*ArcCosh[c*x])^(-5/2),x]

[Out]

(2*E^((2*a)/b + ArcCosh[c*x])*Sqrt[a/b + ArcCosh[c*x]]*(a + b*ArcCosh[c*x])*Gamma[1/2, a/b + ArcCosh[c*x]] - 2
*(E^(a/b)*(b*E^ArcCosh[c*x]*Sqrt[(-1 + c*x)/(1 + c*x)]*(1 + c*x) + (1 + E^(2*ArcCosh[c*x]))*(a + b*ArcCosh[c*x
])) + b*E^ArcCosh[c*x]*(-((a + b*ArcCosh[c*x])/b))^(3/2)*Gamma[1/2, -((a + b*ArcCosh[c*x])/b)]))/(3*b^2*c*E^((
a + b*ArcCosh[c*x])/b)*(a + b*ArcCosh[c*x])^(3/2))

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Maple [F]  time = 0.094, size = 0, normalized size = 0. \begin{align*} \int \left ( a+b{\rm arccosh} \left (cx\right ) \right ) ^{-{\frac{5}{2}}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/(a+b*arccosh(c*x))^(5/2),x)

[Out]

int(1/(a+b*arccosh(c*x))^(5/2),x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{{\left (b \operatorname{arcosh}\left (c x\right ) + a\right )}^{\frac{5}{2}}}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(a+b*arccosh(c*x))^(5/2),x, algorithm="maxima")

[Out]

integrate((b*arccosh(c*x) + a)^(-5/2), x)

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Fricas [F(-2)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: UnboundLocalError} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(a+b*arccosh(c*x))^(5/2),x, algorithm="fricas")

[Out]

Exception raised: UnboundLocalError

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Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{\left (a + b \operatorname{acosh}{\left (c x \right )}\right )^{\frac{5}{2}}}\, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(a+b*acosh(c*x))**(5/2),x)

[Out]

Integral((a + b*acosh(c*x))**(-5/2), x)

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \mathit{sage}_{0} x \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(a+b*arccosh(c*x))^(5/2),x, algorithm="giac")

[Out]

sage0*x