3.129 \(\int \cosh (a+b x) \text{Chi}(a+b x) \, dx\)

Optimal. Leaf size=33 \[ \frac{\text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{\text{Shi}(2 a+2 b x)}{2 b} \]

[Out]

(CoshIntegral[a + b*x]*Sinh[a + b*x])/b - SinhIntegral[2*a + 2*b*x]/(2*b)

________________________________________________________________________________________

Rubi [A]  time = 0.0605374, antiderivative size = 33, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 13, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.308, Rules used = {6541, 5448, 12, 3298} \[ \frac{\text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{\text{Shi}(2 a+2 b x)}{2 b} \]

Antiderivative was successfully verified.

[In]

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

[Out]

(CoshIntegral[a + b*x]*Sinh[a + b*x])/b - SinhIntegral[2*a + 2*b*x]/(2*b)

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]]

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]

Rubi steps

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

Mathematica [A]  time = 0.0158049, size = 32, normalized size = 0.97 \[ \frac{\text{Chi}(a+b x) \sinh (a+b x)}{b}-\frac{\text{Shi}(2 (a+b x))}{2 b} \]

Antiderivative was successfully verified.

[In]

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

[Out]

(CoshIntegral[a + b*x]*Sinh[a + b*x])/b - SinhIntegral[2*(a + b*x)]/(2*b)

________________________________________________________________________________________

Maple [A]  time = 0.047, size = 30, normalized size = 0.9 \begin{align*}{\frac{1}{b} \left ({\it Chi} \left ( bx+a \right ) \sinh \left ( bx+a \right ) -{\frac{{\it Shi} \left ( 2\,bx+2\,a \right ) }{2}} \right ) } \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

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

[Out]

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

________________________________________________________________________________________

Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int{\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(Chi(b*x+a)*cosh(b*x+a),x, algorithm="maxima")

[Out]

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

________________________________________________________________________________________

Fricas [F]  time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\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(Chi(b*x+a)*cosh(b*x+a),x, algorithm="fricas")

[Out]

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

________________________________________________________________________________________

Sympy [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int \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(Chi(b*x+a)*cosh(b*x+a),x)

[Out]

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

________________________________________________________________________________________

Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int{\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(Chi(b*x+a)*cosh(b*x+a),x, algorithm="giac")

[Out]

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