\(\int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx\) [127]

Optimal result

Integrand size = 16, antiderivative size = 186 \[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\frac {x}{b^2}+\frac {a \cosh (2 a+2 b x)}{4 b^3}-\frac {x \cosh (2 a+2 b x)}{4 b^2}-\frac {2 x \cosh (a+b x) \text {Chi}(a+b x)}{b^2}-\frac {a \text {Chi}(2 a+2 b x)}{b^3}-\frac {a \log (a+b x)}{b^3}+\frac {\cosh (a+b x) \sinh (a+b x)}{b^3}+\frac {2 \text {Chi}(a+b x) \sinh (a+b x)}{b^3}+\frac {x^2 \text {Chi}(a+b x) \sinh (a+b x)}{b}+\frac {\sinh (2 a+2 b x)}{8 b^3}-\frac {\text {Shi}(2 a+2 b x)}{b^3}-\frac {a^2 \text {Shi}(2 a+2 b x)}{2 b^3} \]

[Out]

x/b^2-a*Chi(2*b*x+2*a)/b^3-2*x*Chi(b*x+a)*cosh(b*x+a)/b^2+1/4*a*cosh(2*b*x+2*a)/b^3-1/4*x*cosh(2*b*x+2*a)/b^2-
a*ln(b*x+a)/b^3-Shi(2*b*x+2*a)/b^3-1/2*a^2*Shi(2*b*x+2*a)/b^3+2*Chi(b*x+a)*sinh(b*x+a)/b^3+x^2*Chi(b*x+a)*sinh
(b*x+a)/b+cosh(b*x+a)*sinh(b*x+a)/b^3+1/8*sinh(2*b*x+2*a)/b^3

Rubi [A] (verified)

Time = 0.43 (sec) , antiderivative size = 186, normalized size of antiderivative = 1.00, number of steps used = 21, number of rules used = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.000, Rules used = {6678, 5736, 6873, 6874, 2718, 3377, 2717, 3379, 6684, 2715, 8, 3393, 3382, 6676, 5556, 12} \[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=-\frac {a^2 \text {Shi}(2 a+2 b x)}{2 b^3}-\frac {a \text {Chi}(2 a+2 b x)}{b^3}+\frac {2 \text {Chi}(a+b x) \sinh (a+b x)}{b^3}-\frac {\text {Shi}(2 a+2 b x)}{b^3}-\frac {a \log (a+b x)}{b^3}+\frac {\sinh (2 a+2 b x)}{8 b^3}+\frac {a \cosh (2 a+2 b x)}{4 b^3}+\frac {\sinh (a+b x) \cosh (a+b x)}{b^3}-\frac {2 x \text {Chi}(a+b x) \cosh (a+b x)}{b^2}-\frac {x \cosh (2 a+2 b x)}{4 b^2}+\frac {x^2 \text {Chi}(a+b x) \sinh (a+b x)}{b}+\frac {x}{b^2} \]

[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 8

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

Rule 12

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

Rule 2715

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] && Integ
erQ[2*n]

Rule 2717

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

Rule 2718

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

Rule 3377

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 3379

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 3382

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 3393

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 5556

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 5736

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 6676

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 6678

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 6684

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 6873

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

Rule 6874

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

Rubi steps \begin{align*} \text {integral}& = \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] (verified)

Time = 0.19 (sec) , antiderivative size = 123, normalized size of antiderivative = 0.66 \[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\frac {8 b x+2 a \cosh (2 (a+b x))-2 b x \cosh (2 (a+b x))-8 a \text {Chi}(2 (a+b x))-8 a \log (a+b x)+8 \text {Chi}(a+b x) \left (-2 b x \cosh (a+b x)+\left (2+b^2 x^2\right ) \sinh (a+b x)\right )+5 \sinh (2 (a+b x))-8 \text {Shi}(2 (a+b x))-4 a^2 \text {Shi}(2 (a+b x))}{8 b^3} \]

[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)

Maple [A] (verified)

Time = 2.55 (sec) , antiderivative size = 175, normalized size of antiderivative = 0.94

method	result	size
derivativedivides	\(\frac {\operatorname {Chi}\left (b x +a \right ) \left (a^{2} \sinh \left (b x +a \right )-2 a \left (\left (b x +a \right ) \sinh \left (b x +a \right )-\cosh \left (b x +a \right )\right )+\left (b x +a \right )^{2} \sinh \left (b x +a \right )-2 \left (b x +a \right ) \cosh \left (b x +a \right )+2 \sinh \left (b x +a \right )\right )-\frac {a^{2} \operatorname {Shi}\left (2 b x +2 a \right )}{2}+a \cosh \left (b x +a \right )^{2}-a \ln \left (b x +a \right )-a \,\operatorname {Chi}\left (2 b x +2 a \right )-\frac {\left (b x +a \right ) \cosh \left (b x +a \right )^{2}}{2}+\frac {5 \cosh \left (b x +a \right ) \sinh \left (b x +a \right )}{4}+\frac {5 b x}{4}+\frac {5 a}{4}-\operatorname {Shi}\left (2 b x +2 a \right )}{b^{3}}\)	\(175\)
default	\(\frac {\operatorname {Chi}\left (b x +a \right ) \left (a^{2} \sinh \left (b x +a \right )-2 a \left (\left (b x +a \right ) \sinh \left (b x +a \right )-\cosh \left (b x +a \right )\right )+\left (b x +a \right )^{2} \sinh \left (b x +a \right )-2 \left (b x +a \right ) \cosh \left (b x +a \right )+2 \sinh \left (b x +a \right )\right )-\frac {a^{2} \operatorname {Shi}\left (2 b x +2 a \right )}{2}+a \cosh \left (b x +a \right )^{2}-a \ln \left (b x +a \right )-a \,\operatorname {Chi}\left (2 b x +2 a \right )-\frac {\left (b x +a \right ) \cosh \left (b x +a \right )^{2}}{2}+\frac {5 \cosh \left (b x +a \right ) \sinh \left (b x +a \right )}{4}+\frac {5 b x}{4}+\frac {5 a}{4}-\operatorname {Shi}\left (2 b x +2 a \right )}{b^{3}}\)	\(175\)

[In]

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

[Out]

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

Fricas [F]

\[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\int { x^{2} {\rm Chi}\left (b x + a\right ) \cosh \left (b x + a\right ) \,d x } \]

[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)

Sympy [F]

\[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\int x^{2} \cosh {\left (a + b x \right )} \operatorname {Chi}\left (a + b x\right )\, dx \]

[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)

Maxima [F]

\[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\int { x^{2} {\rm Chi}\left (b x + a\right ) \cosh \left (b x + a\right ) \,d x } \]

[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)

Giac [F]

\[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\int { x^{2} {\rm Chi}\left (b x + a\right ) \cosh \left (b x + a\right ) \,d x } \]

[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)

Mupad [F(-1)]

Timed out. \[ \int x^2 \cosh (a+b x) \text {Chi}(a+b x) \, dx=\int x^2\,\mathrm {coshint}\left (a+b\,x\right )\,\mathrm {cosh}\left (a+b\,x\right ) \,d x \]

[In]

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

[Out]

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