\(\int x \text {Chi}(a+b x)^2 \, dx\) [95]

Optimal result

Integrand size = 10, antiderivative size = 154 \[ \int x \text {Chi}(a+b x)^2 \, dx=\frac {\cosh (2 a+2 b x)}{4 b^2}+\frac {\cosh (a+b x) \text {Chi}(a+b x)}{b^2}-\frac {a (a+b x) \text {Chi}(a+b x)^2}{2 b^2}+\frac {x (a+b x) \text {Chi}(a+b x)^2}{2 b}-\frac {\text {Chi}(2 a+2 b x)}{2 b^2}-\frac {\log (a+b x)}{2 b^2}+\frac {a \text {Chi}(a+b x) \sinh (a+b x)}{b^2}-\frac {x \text {Chi}(a+b x) \sinh (a+b x)}{b}-\frac {a \text {Shi}(2 a+2 b x)}{b^2} \]

[Out]

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

Rubi [A] (verified)

Time = 0.25 (sec) , antiderivative size = 154, normalized size of antiderivative = 1.00, number of steps used = 17, number of rules used = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 1.400, Rules used = {6674, 6678, 5736, 6873, 6874, 2718, 3379, 6682, 3393, 3382, 6670, 6676, 5556, 12} \[ \int x \text {Chi}(a+b x)^2 \, dx=-\frac {a (a+b x) \text {Chi}(a+b x)^2}{2 b^2}-\frac {\text {Chi}(2 a+2 b x)}{2 b^2}+\frac {a \text {Chi}(a+b x) \sinh (a+b x)}{b^2}+\frac {\text {Chi}(a+b x) \cosh (a+b x)}{b^2}-\frac {a \text {Shi}(2 a+2 b x)}{b^2}-\frac {\log (a+b x)}{2 b^2}+\frac {\cosh (2 a+2 b x)}{4 b^2}+\frac {x (a+b x) \text {Chi}(a+b x)^2}{2 b}-\frac {x \text {Chi}(a+b x) \sinh (a+b x)}{b} \]

[In]

Int[x*CoshIntegral[a + b*x]^2,x]

[Out]

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

Rule 12

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

Rule 2718

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

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 6670

Int[CoshIntegral[(a_.) + (b_.)*(x_)]^2, x_Symbol] :> Simp[(a + b*x)*(CoshIntegral[a + b*x]^2/b), x] - Dist[2,
Int[Cosh[a + b*x]*CoshIntegral[a + b*x], x], x] /; FreeQ[{a, b}, x]

Rule 6674

Int[CoshIntegral[(a_) + (b_.)*(x_)]^2*((c_.) + (d_.)*(x_))^(m_.), x_Symbol] :> Simp[(a + b*x)*(c + d*x)^m*(Cos
hIntegral[a + b*x]^2/(b*(m + 1))), x] + (-Dist[2/(m + 1), Int[(c + d*x)^m*Cosh[a + b*x]*CoshIntegral[a + b*x],
x], x] + Dist[(b*c - a*d)*(m/(b*(m + 1))), Int[(c + d*x)^(m - 1)*CoshIntegral[a + b*x]^2, x], x]) /; FreeQ[{a
, b, c, d}, x] && IGtQ[m, 0]

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 6682

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

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

Mathematica [A] (verified)

Time = 0.18 (sec) , antiderivative size = 95, normalized size of antiderivative = 0.62 \[ \int x \text {Chi}(a+b x)^2 \, dx=\frac {\cosh (2 (a+b x))-2 \left (a^2-b^2 x^2\right ) \text {Chi}(a+b x)^2-2 \text {Chi}(2 (a+b x))-2 \log (a+b x)+4 \text {Chi}(a+b x) (\cosh (a+b x)+(a-b x) \sinh (a+b x))-4 a \text {Shi}(2 (a+b x))}{4 b^2} \]

[In]

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

[Out]

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

Maple [A] (verified)

Time = 0.92 (sec) , antiderivative size = 113, normalized size of antiderivative = 0.73

method	result	size
derivativedivides	\(\frac {\operatorname {Chi}\left (b x +a \right )^{2} \left (-\left (b x +a \right ) a +\frac {\left (b x +a \right )^{2}}{2}\right )-2 \,\operatorname {Chi}\left (b x +a \right ) \left (-a \sinh \left (b x +a \right )+\frac {\left (b x +a \right ) \sinh \left (b x +a \right )}{2}-\frac {\cosh \left (b x +a \right )}{2}\right )-a \,\operatorname {Shi}\left (2 b x +2 a \right )+\frac {\cosh \left (b x +a \right )^{2}}{2}-\frac {\ln \left (b x +a \right )}{2}-\frac {\operatorname {Chi}\left (2 b x +2 a \right )}{2}}{b^{2}}\)	\(113\)
default	\(\frac {\operatorname {Chi}\left (b x +a \right )^{2} \left (-\left (b x +a \right ) a +\frac {\left (b x +a \right )^{2}}{2}\right )-2 \,\operatorname {Chi}\left (b x +a \right ) \left (-a \sinh \left (b x +a \right )+\frac {\left (b x +a \right ) \sinh \left (b x +a \right )}{2}-\frac {\cosh \left (b x +a \right )}{2}\right )-a \,\operatorname {Shi}\left (2 b x +2 a \right )+\frac {\cosh \left (b x +a \right )^{2}}{2}-\frac {\ln \left (b x +a \right )}{2}-\frac {\operatorname {Chi}\left (2 b x +2 a \right )}{2}}{b^{2}}\)	\(113\)

[In]

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

[Out]

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

Fricas [F]

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

[In]

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

[Out]

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

Sympy [F]

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

[In]

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

[Out]

Integral(x*Chi(a + b*x)**2, x)

Maxima [F]

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

[In]

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

[Out]

integrate(x*Chi(b*x + a)^2, x)

Giac [F]

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

[In]

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

[Out]

integrate(x*Chi(b*x + a)^2, x)

Mupad [F(-1)]

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

[In]

int(x*coshint(a + b*x)^2,x)

[Out]

int(x*coshint(a + b*x)^2, x)