3.127 \(\int x^2 \cosh (a+b x) \text{Chi}(a+b x) \, dx\)

Optimal. Leaf size=186 \[ -\frac{a^2 \text{Shi}(2 a+2 b x)}{2 b^3}-\frac{a \text{Chi}(2 a+2 b x)}{b^3}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}-\frac{2 x \text{Chi}(a+b x) \cosh (a+b x)}{b^2}-\frac{\text{Shi}(2 a+2 b x)}{b^3}-\frac{a \log (a+b x)}{b^3}+\frac{\sinh (2 a+2 b x)}{8 b^3}+\frac{a \cosh (2 a+2 b x)}{4 b^3}-\frac{x \cosh (2 a+2 b x)}{4 b^2}+\frac{\sinh (a+b x) \cosh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}+\frac{x}{b^2} \]

[Out]

x/b^2 + (a*Cosh[2*a + 2*b*x])/(4*b^3) - (x*Cosh[2*a + 2*b*x])/(4*b^2) - (2*x*Cosh[a + b*x]*CoshIntegral[a + b*
x])/b^2 - (a*CoshIntegral[2*a + 2*b*x])/b^3 - (a*Log[a + b*x])/b^3 + (Cosh[a + b*x]*Sinh[a + b*x])/b^3 + (2*Co
shIntegral[a + b*x]*Sinh[a + b*x])/b^3 + (x^2*CoshIntegral[a + b*x]*Sinh[a + b*x])/b + Sinh[2*a + 2*b*x]/(8*b^
3) - SinhIntegral[2*a + 2*b*x]/b^3 - (a^2*SinhIntegral[2*a + 2*b*x])/(2*b^3)

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Rubi [A]  time = 0.572283, antiderivative size = 186, normalized size of antiderivative = 1., number of steps used = 21, number of rules used = 16, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 1., Rules used = {6543, 5617, 6741, 6742, 2638, 3296, 2637, 3298, 6549, 2635, 8, 3312, 3301, 6541, 5448, 12} \[ -\frac{a^2 \text{Shi}(2 a+2 b x)}{2 b^3}-\frac{a \text{Chi}(2 a+2 b x)}{b^3}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}-\frac{2 x \text{Chi}(a+b x) \cosh (a+b x)}{b^2}-\frac{\text{Shi}(2 a+2 b x)}{b^3}-\frac{a \log (a+b x)}{b^3}+\frac{\sinh (2 a+2 b x)}{8 b^3}+\frac{a \cosh (2 a+2 b x)}{4 b^3}-\frac{x \cosh (2 a+2 b x)}{4 b^2}+\frac{\sinh (a+b x) \cosh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}+\frac{x}{b^2} \]

Antiderivative was successfully verified.

[In]

Int[x^2*Cosh[a + b*x]*CoshIntegral[a + b*x],x]

[Out]

x/b^2 + (a*Cosh[2*a + 2*b*x])/(4*b^3) - (x*Cosh[2*a + 2*b*x])/(4*b^2) - (2*x*Cosh[a + b*x]*CoshIntegral[a + b*
x])/b^2 - (a*CoshIntegral[2*a + 2*b*x])/b^3 - (a*Log[a + b*x])/b^3 + (Cosh[a + b*x]*Sinh[a + b*x])/b^3 + (2*Co
shIntegral[a + b*x]*Sinh[a + b*x])/b^3 + (x^2*CoshIntegral[a + b*x]*Sinh[a + b*x])/b + Sinh[2*a + 2*b*x]/(8*b^
3) - SinhIntegral[2*a + 2*b*x]/b^3 - (a^2*SinhIntegral[2*a + 2*b*x])/(2*b^3)

Rule 6543

Int[Cosh[(a_.) + (b_.)*(x_)]*CoshIntegral[(c_.) + (d_.)*(x_)]*((e_.) + (f_.)*(x_))^(m_.), x_Symbol] :> Simp[((
e + f*x)^m*Sinh[a + b*x]*CoshIntegral[c + d*x])/b, x] + (-Dist[d/b, Int[((e + f*x)^m*Sinh[a + b*x]*Cosh[c + d*
x])/(c + d*x), x], x] - Dist[(f*m)/b, Int[(e + f*x)^(m - 1)*Sinh[a + b*x]*CoshIntegral[c + d*x], x], x]) /; Fr
eeQ[{a, b, c, d, e, f}, x] && IGtQ[m, 0]

Rule 5617

Int[Cosh[w_]^(p_.)*(u_.)*Sinh[v_]^(p_.), x_Symbol] :> Dist[1/2^p, Int[u*Sinh[2*v]^p, x], x] /; EqQ[w, v] && In
tegerQ[p]

Rule 6741

Int[u_, x_Symbol] :> With[{v = NormalizeIntegrand[u, x]}, Int[v, x] /; v =!= u]

Rule 6742

Int[u_, x_Symbol] :> With[{v = ExpandIntegrand[u, x]}, Int[v, x] /; SumQ[v]]

Rule 2638

Int[sin[(c_.) + (d_.)*(x_)], x_Symbol] :> -Simp[Cos[c + d*x]/d, x] /; FreeQ[{c, d}, x]

Rule 3296

Int[((c_.) + (d_.)*(x_))^(m_.)*sin[(e_.) + (f_.)*(x_)], x_Symbol] :> -Simp[((c + d*x)^m*Cos[e + f*x])/f, x] +
Dist[(d*m)/f, Int[(c + d*x)^(m - 1)*Cos[e + f*x], x], x] /; FreeQ[{c, d, e, f}, x] && GtQ[m, 0]

Rule 2637

Int[sin[Pi/2 + (c_.) + (d_.)*(x_)], x_Symbol] :> Simp[Sin[c + d*x]/d, x] /; FreeQ[{c, d}, x]

Rule 3298

Int[sin[(e_.) + (Complex[0, fz_])*(f_.)*(x_)]/((c_.) + (d_.)*(x_)), x_Symbol] :> 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 6549

Int[CoshIntegral[(c_.) + (d_.)*(x_)]*((e_.) + (f_.)*(x_))^(m_.)*Sinh[(a_.) + (b_.)*(x_)], x_Symbol] :> Simp[((
e + f*x)^m*Cosh[a + b*x]*CoshIntegral[c + d*x])/b, x] + (-Dist[d/b, Int[((e + f*x)^m*Cosh[a + b*x]*Cosh[c + d*
x])/(c + d*x), x], x] - Dist[(f*m)/b, Int[(e + f*x)^(m - 1)*Cosh[a + b*x]*CoshIntegral[c + d*x], x], x]) /; Fr
eeQ[{a, b, c, d, e, f}, x] && IGtQ[m, 0]

Rule 2635

Int[((b_.)*sin[(c_.) + (d_.)*(x_)])^(n_), x_Symbol] :> -Simp[(b*Cos[c + d*x]*(b*Sin[c + d*x])^(n - 1))/(d*n),
x] + Dist[(b^2*(n - 1))/n, Int[(b*Sin[c + d*x])^(n - 2), x], x] /; FreeQ[{b, c, d}, x] && GtQ[n, 1] && Integer
Q[2*n]

Rule 8

Int[a_, x_Symbol] :> Simp[a*x, x] /; FreeQ[a, x]

Rule 3312

Int[((c_.) + (d_.)*(x_))^(m_)*sin[(e_.) + (f_.)*(x_)]^(n_), x_Symbol] :> Int[ExpandTrigReduce[(c + d*x)^m, Sin
[e + f*x]^n, x], x] /; FreeQ[{c, d, e, f, m}, x] && IGtQ[n, 1] && ( !RationalQ[m] || (GeQ[m, -1] && LtQ[m, 1])
)

Rule 3301

Int[sin[(e_.) + (Complex[0, fz_])*(f_.)*(x_)]/((c_.) + (d_.)*(x_)), x_Symbol] :> 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 6541

Int[Cosh[(a_.) + (b_.)*(x_)]*CoshIntegral[(c_.) + (d_.)*(x_)], x_Symbol] :> Simp[(Sinh[a + b*x]*CoshIntegral[c
+ d*x])/b, x] - Dist[d/b, Int[(Sinh[a + b*x]*Cosh[c + d*x])/(c + d*x), x], x] /; FreeQ[{a, b, c, d}, x]

Rule 5448

Int[Cosh[(a_.) + (b_.)*(x_)]^(p_.)*((c_.) + (d_.)*(x_))^(m_.)*Sinh[(a_.) + (b_.)*(x_)]^(n_.), x_Symbol] :> Int
[ExpandTrigReduce[(c + d*x)^m, Sinh[a + b*x]^n*Cosh[a + b*x]^p, x], x] /; FreeQ[{a, b, c, d, m}, x] && IGtQ[n,
0] && IGtQ[p, 0]

Rule 12

Int[(a_)*(u_), x_Symbol] :> Dist[a, Int[u, x], x] /; FreeQ[a, x] &&  !MatchQ[u, (b_)*(v_) /; FreeQ[b, x]]

Rubi steps

\begin{align*} \int x^2 \cosh (a+b x) \text{Chi}(a+b x) \, dx &=\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{2 \int x \text{Chi}(a+b x) \sinh (a+b x) \, dx}{b}-\int \frac{x^2 \cosh (a+b x) \sinh (a+b x)}{a+b x} \, dx\\ &=-\frac{2 x \cosh (a+b x) \text{Chi}(a+b x)}{b^2}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{1}{2} \int \frac{x^2 \sinh (2 (a+b x))}{a+b x} \, dx+\frac{2 \int \cosh (a+b x) \text{Chi}(a+b x) \, dx}{b^2}+\frac{2 \int \frac{x \cosh ^2(a+b x)}{a+b x} \, dx}{b}\\ &=-\frac{2 x \cosh (a+b x) \text{Chi}(a+b x)}{b^2}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{1}{2} \int \frac{x^2 \sinh (2 a+2 b x)}{a+b x} \, dx-\frac{2 \int \frac{\cosh (a+b x) \sinh (a+b x)}{a+b x} \, dx}{b^2}+\frac{2 \int \left (\frac{\cosh ^2(a+b x)}{b}-\frac{a \cosh ^2(a+b x)}{b (a+b x)}\right ) \, dx}{b}\\ &=-\frac{2 x \cosh (a+b x) \text{Chi}(a+b x)}{b^2}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{1}{2} \int \left (-\frac{a \sinh (2 a+2 b x)}{b^2}+\frac{x \sinh (2 a+2 b x)}{b}+\frac{a^2 \sinh (2 a+2 b x)}{b^2 (a+b x)}\right ) \, dx+\frac{2 \int \cosh ^2(a+b x) \, dx}{b^2}-\frac{2 \int \frac{\sinh (2 a+2 b x)}{2 (a+b x)} \, dx}{b^2}-\frac{(2 a) \int \frac{\cosh ^2(a+b x)}{a+b x} \, dx}{b^2}\\ &=-\frac{2 x \cosh (a+b x) \text{Chi}(a+b x)}{b^2}+\frac{\cosh (a+b x) \sinh (a+b x)}{b^3}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}+\frac{\int 1 \, dx}{b^2}-\frac{\int \frac{\sinh (2 a+2 b x)}{a+b x} \, dx}{b^2}+\frac{a \int \sinh (2 a+2 b x) \, dx}{2 b^2}-\frac{(2 a) \int \left (\frac{1}{2 (a+b x)}+\frac{\cosh (2 a+2 b x)}{2 (a+b x)}\right ) \, dx}{b^2}-\frac{a^2 \int \frac{\sinh (2 a+2 b x)}{a+b x} \, dx}{2 b^2}-\frac{\int x \sinh (2 a+2 b x) \, dx}{2 b}\\ &=\frac{x}{b^2}+\frac{a \cosh (2 a+2 b x)}{4 b^3}-\frac{x \cosh (2 a+2 b x)}{4 b^2}-\frac{2 x \cosh (a+b x) \text{Chi}(a+b x)}{b^2}-\frac{a \log (a+b x)}{b^3}+\frac{\cosh (a+b x) \sinh (a+b x)}{b^3}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{\text{Shi}(2 a+2 b x)}{b^3}-\frac{a^2 \text{Shi}(2 a+2 b x)}{2 b^3}+\frac{\int \cosh (2 a+2 b x) \, dx}{4 b^2}-\frac{a \int \frac{\cosh (2 a+2 b x)}{a+b x} \, dx}{b^2}\\ &=\frac{x}{b^2}+\frac{a \cosh (2 a+2 b x)}{4 b^3}-\frac{x \cosh (2 a+2 b x)}{4 b^2}-\frac{2 x \cosh (a+b x) \text{Chi}(a+b x)}{b^2}-\frac{a \text{Chi}(2 a+2 b x)}{b^3}-\frac{a \log (a+b x)}{b^3}+\frac{\cosh (a+b x) \sinh (a+b x)}{b^3}+\frac{2 \text{Chi}(a+b x) \sinh (a+b x)}{b^3}+\frac{x^2 \text{Chi}(a+b x) \sinh (a+b x)}{b}+\frac{\sinh (2 a+2 b x)}{8 b^3}-\frac{\text{Shi}(2 a+2 b x)}{b^3}-\frac{a^2 \text{Shi}(2 a+2 b x)}{2 b^3}\\ \end{align*}

Mathematica [A]  time = 0.279389, size = 123, normalized size = 0.66 \[ \frac{-4 a^2 \text{Shi}(2 (a+b x))+8 \text{Chi}(a+b x) \left (\left (b^2 x^2+2\right ) \sinh (a+b x)-2 b x \cosh (a+b x)\right )-8 a \text{Chi}(2 (a+b x))-8 \text{Shi}(2 (a+b x))-8 a \log (a+b x)+5 \sinh (2 (a+b x))+2 a \cosh (2 (a+b x))-2 b x \cosh (2 (a+b x))+8 b x}{8 b^3} \]

Antiderivative was successfully verified.

[In]

Integrate[x^2*Cosh[a + b*x]*CoshIntegral[a + b*x],x]

[Out]

(8*b*x + 2*a*Cosh[2*(a + b*x)] - 2*b*x*Cosh[2*(a + b*x)] - 8*a*CoshIntegral[2*(a + b*x)] - 8*a*Log[a + b*x] +
8*CoshIntegral[a + b*x]*(-2*b*x*Cosh[a + b*x] + (2 + b^2*x^2)*Sinh[a + b*x]) + 5*Sinh[2*(a + b*x)] - 8*SinhInt
egral[2*(a + b*x)] - 4*a^2*SinhIntegral[2*(a + b*x)])/(8*b^3)

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Maple [A]  time = 0.067, size = 171, normalized size = 0.9 \begin{align*}{\frac{{x}^{2}{\it Chi} \left ( bx+a \right ) \sinh \left ( bx+a \right ) }{b}}-2\,{\frac{x{\it Chi} \left ( bx+a \right ) \cosh \left ( bx+a \right ) }{{b}^{2}}}+2\,{\frac{{\it Chi} \left ( bx+a \right ) \sinh \left ( bx+a \right ) }{{b}^{3}}}-{\frac{ \left ( \cosh \left ( bx+a \right ) \right ) ^{2}x}{2\,{b}^{2}}}+{\frac{a \left ( \cosh \left ( bx+a \right ) \right ) ^{2}}{2\,{b}^{3}}}+{\frac{5\,\cosh \left ( bx+a \right ) \sinh \left ( bx+a \right ) }{4\,{b}^{3}}}+{\frac{5\,x}{4\,{b}^{2}}}+{\frac{5\,a}{4\,{b}^{3}}}-{\frac{{\it Shi} \left ( 2\,bx+2\,a \right ) }{{b}^{3}}}-{\frac{a\ln \left ( bx+a \right ) }{{b}^{3}}}-{\frac{a{\it Chi} \left ( 2\,bx+2\,a \right ) }{{b}^{3}}}-{\frac{{a}^{2}{\it Shi} \left ( 2\,bx+2\,a \right ) }{2\,{b}^{3}}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(x^2*Chi(b*x+a)*cosh(b*x+a),x)

[Out]

x^2*Chi(b*x+a)*sinh(b*x+a)/b-2*x*Chi(b*x+a)*cosh(b*x+a)/b^2+2*Chi(b*x+a)*sinh(b*x+a)/b^3-1/2/b^2*cosh(b*x+a)^2
*x+1/2/b^3*a*cosh(b*x+a)^2+5/4*cosh(b*x+a)*sinh(b*x+a)/b^3+5/4*x/b^2+5/4/b^3*a-Shi(2*b*x+2*a)/b^3-a*ln(b*x+a)/
b^3-a*Chi(2*b*x+2*a)/b^3-1/2*a^2*Shi(2*b*x+2*a)/b^3

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2}{\rm Chi}\left (b x + a\right ) \cosh \left (b x + a\right )\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*Chi(b*x+a)*cosh(b*x+a),x, algorithm="maxima")

[Out]

integrate(x^2*Chi(b*x + a)*cosh(b*x + a), x)

________________________________________________________________________________________

Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (x^{2} \cosh \left (b x + a\right ) \operatorname{Chi}\left (b x + a\right ), x\right ) \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*Chi(b*x+a)*cosh(b*x+a),x, algorithm="fricas")

[Out]

integral(x^2*cosh(b*x + a)*cosh_integral(b*x + a), x)

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x**2*Chi(b*x+a)*cosh(b*x+a),x)

[Out]

Integral(x**2*cosh(a + b*x)*Chi(a + b*x), x)

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{2}{\rm Chi}\left (b x + a\right ) \cosh \left (b x + a\right )\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(x^2*Chi(b*x+a)*cosh(b*x+a),x, algorithm="giac")

[Out]

integrate(x^2*Chi(b*x + a)*cosh(b*x + a), x)