3.165 \(\int \frac{(a+b \cosh (e+f x))^2}{c+d x} \, dx\)

Optimal. Leaf size=156 \[ \frac{a^2 \log (c+d x)}{d}+\frac{2 a b \text{Chi}\left (x f+\frac{c f}{d}\right ) \cosh \left (e-\frac{c f}{d}\right )}{d}+\frac{2 a b \sinh \left (e-\frac{c f}{d}\right ) \text{Shi}\left (x f+\frac{c f}{d}\right )}{d}+\frac{b^2 \text{Chi}\left (2 x f+\frac{2 c f}{d}\right ) \cosh \left (2 e-\frac{2 c f}{d}\right )}{2 d}+\frac{b^2 \sinh \left (2 e-\frac{2 c f}{d}\right ) \text{Shi}\left (2 x f+\frac{2 c f}{d}\right )}{2 d}+\frac{b^2 \log (c+d x)}{2 d} \]

[Out]

(2*a*b*Cosh[e - (c*f)/d]*CoshIntegral[(c*f)/d + f*x])/d + (b^2*Cosh[2*e - (2*c*f)/d]*CoshIntegral[(2*c*f)/d +
2*f*x])/(2*d) + (a^2*Log[c + d*x])/d + (b^2*Log[c + d*x])/(2*d) + (2*a*b*Sinh[e - (c*f)/d]*SinhIntegral[(c*f)/
d + f*x])/d + (b^2*Sinh[2*e - (2*c*f)/d]*SinhIntegral[(2*c*f)/d + 2*f*x])/(2*d)

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Rubi [A]  time = 0.310177, antiderivative size = 156, normalized size of antiderivative = 1., number of steps used = 10, number of rules used = 5, integrand size = 20, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {3317, 3303, 3298, 3301, 3312} \[ \frac{a^2 \log (c+d x)}{d}+\frac{2 a b \text{Chi}\left (x f+\frac{c f}{d}\right ) \cosh \left (e-\frac{c f}{d}\right )}{d}+\frac{2 a b \sinh \left (e-\frac{c f}{d}\right ) \text{Shi}\left (x f+\frac{c f}{d}\right )}{d}+\frac{b^2 \text{Chi}\left (2 x f+\frac{2 c f}{d}\right ) \cosh \left (2 e-\frac{2 c f}{d}\right )}{2 d}+\frac{b^2 \sinh \left (2 e-\frac{2 c f}{d}\right ) \text{Shi}\left (2 x f+\frac{2 c f}{d}\right )}{2 d}+\frac{b^2 \log (c+d x)}{2 d} \]

Antiderivative was successfully verified.

[In]

Int[(a + b*Cosh[e + f*x])^2/(c + d*x),x]

[Out]

(2*a*b*Cosh[e - (c*f)/d]*CoshIntegral[(c*f)/d + f*x])/d + (b^2*Cosh[2*e - (2*c*f)/d]*CoshIntegral[(2*c*f)/d +
2*f*x])/(2*d) + (a^2*Log[c + d*x])/d + (b^2*Log[c + d*x])/(2*d) + (2*a*b*Sinh[e - (c*f)/d]*SinhIntegral[(c*f)/
d + f*x])/d + (b^2*Sinh[2*e - (2*c*f)/d]*SinhIntegral[(2*c*f)/d + 2*f*x])/(2*d)

Rule 3317

Int[((c_.) + (d_.)*(x_))^(m_.)*((a_) + (b_.)*sin[(e_.) + (f_.)*(x_)])^(n_.), x_Symbol] :> Int[ExpandIntegrand[
(c + d*x)^m, (a + b*Sin[e + f*x])^n, x], x] /; FreeQ[{a, b, c, d, e, f, m}, x] && IGtQ[n, 0] && (EqQ[n, 1] ||
IGtQ[m, 0] || NeQ[a^2 - b^2, 0])

Rule 3303

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

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 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 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])
)

Rubi steps

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

Mathematica [A]  time = 0.282409, size = 133, normalized size = 0.85 \[ \frac{2 a^2 \log (c+d x)+4 a b \text{Chi}\left (f \left (\frac{c}{d}+x\right )\right ) \cosh \left (e-\frac{c f}{d}\right )+4 a b \sinh \left (e-\frac{c f}{d}\right ) \text{Shi}\left (f \left (\frac{c}{d}+x\right )\right )+b^2 \text{Chi}\left (\frac{2 f (c+d x)}{d}\right ) \cosh \left (2 e-\frac{2 c f}{d}\right )+b^2 \sinh \left (2 e-\frac{2 c f}{d}\right ) \text{Shi}\left (\frac{2 f (c+d x)}{d}\right )+b^2 \log (c+d x)}{2 d} \]

Antiderivative was successfully verified.

[In]

Integrate[(a + b*Cosh[e + f*x])^2/(c + d*x),x]

[Out]

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

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Maple [A]  time = 0.102, size = 202, normalized size = 1.3 \begin{align*} -{\frac{ab}{d}{{\rm e}^{{\frac{cf-de}{d}}}}{\it Ei} \left ( 1,fx+e+{\frac{cf-de}{d}} \right ) }-{\frac{ab}{d}{{\rm e}^{-{\frac{cf-de}{d}}}}{\it Ei} \left ( 1,-fx-e-{\frac{cf-de}{d}} \right ) }+{\frac{{a}^{2}\ln \left ( dx+c \right ) }{d}}+{\frac{{b}^{2}\ln \left ( dx+c \right ) }{2\,d}}-{\frac{{b}^{2}}{4\,d}{{\rm e}^{2\,{\frac{cf-de}{d}}}}{\it Ei} \left ( 1,2\,fx+2\,e+2\,{\frac{cf-de}{d}} \right ) }-{\frac{{b}^{2}}{4\,d}{{\rm e}^{-2\,{\frac{cf-de}{d}}}}{\it Ei} \left ( 1,-2\,fx-2\,e-2\,{\frac{cf-de}{d}} \right ) } \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a+b*cosh(f*x+e))^2/(d*x+c),x)

[Out]

-a*b/d*exp((c*f-d*e)/d)*Ei(1,f*x+e+(c*f-d*e)/d)-a*b/d*exp(-(c*f-d*e)/d)*Ei(1,-f*x-e-(c*f-d*e)/d)+a^2*ln(d*x+c)
/d+1/2*b^2*ln(d*x+c)/d-1/4*b^2/d*exp(2*(c*f-d*e)/d)*Ei(1,2*f*x+2*e+2*(c*f-d*e)/d)-1/4*b^2/d*exp(-2*(c*f-d*e)/d
)*Ei(1,-2*f*x-2*e-2*(c*f-d*e)/d)

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Maxima [A]  time = 1.44658, size = 200, normalized size = 1.28 \begin{align*} -\frac{1}{4} \, b^{2}{\left (\frac{e^{\left (-2 \, e + \frac{2 \, c f}{d}\right )} E_{1}\left (\frac{2 \,{\left (d x + c\right )} f}{d}\right )}{d} + \frac{e^{\left (2 \, e - \frac{2 \, c f}{d}\right )} E_{1}\left (-\frac{2 \,{\left (d x + c\right )} f}{d}\right )}{d} - \frac{2 \, \log \left (d x + c\right )}{d}\right )} - a b{\left (\frac{e^{\left (-e + \frac{c f}{d}\right )} E_{1}\left (\frac{{\left (d x + c\right )} f}{d}\right )}{d} + \frac{e^{\left (e - \frac{c f}{d}\right )} E_{1}\left (-\frac{{\left (d x + c\right )} f}{d}\right )}{d}\right )} + \frac{a^{2} \log \left (d x + c\right )}{d} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*cosh(f*x+e))^2/(d*x+c),x, algorithm="maxima")

[Out]

-1/4*b^2*(e^(-2*e + 2*c*f/d)*exp_integral_e(1, 2*(d*x + c)*f/d)/d + e^(2*e - 2*c*f/d)*exp_integral_e(1, -2*(d*
x + c)*f/d)/d - 2*log(d*x + c)/d) - a*b*(e^(-e + c*f/d)*exp_integral_e(1, (d*x + c)*f/d)/d + e^(e - c*f/d)*exp
_integral_e(1, -(d*x + c)*f/d)/d) + a^2*log(d*x + c)/d

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Fricas [A]  time = 2.13337, size = 483, normalized size = 3.1 \begin{align*} \frac{4 \,{\left (a b{\rm Ei}\left (\frac{d f x + c f}{d}\right ) + a b{\rm Ei}\left (-\frac{d f x + c f}{d}\right )\right )} \cosh \left (-\frac{d e - c f}{d}\right ) +{\left (b^{2}{\rm Ei}\left (\frac{2 \,{\left (d f x + c f\right )}}{d}\right ) + b^{2}{\rm Ei}\left (-\frac{2 \,{\left (d f x + c f\right )}}{d}\right )\right )} \cosh \left (-\frac{2 \,{\left (d e - c f\right )}}{d}\right ) + 2 \,{\left (2 \, a^{2} + b^{2}\right )} \log \left (d x + c\right ) - 4 \,{\left (a b{\rm Ei}\left (\frac{d f x + c f}{d}\right ) - a b{\rm Ei}\left (-\frac{d f x + c f}{d}\right )\right )} \sinh \left (-\frac{d e - c f}{d}\right ) -{\left (b^{2}{\rm Ei}\left (\frac{2 \,{\left (d f x + c f\right )}}{d}\right ) - b^{2}{\rm Ei}\left (-\frac{2 \,{\left (d f x + c f\right )}}{d}\right )\right )} \sinh \left (-\frac{2 \,{\left (d e - c f\right )}}{d}\right )}{4 \, d} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*cosh(f*x+e))^2/(d*x+c),x, algorithm="fricas")

[Out]

1/4*(4*(a*b*Ei((d*f*x + c*f)/d) + a*b*Ei(-(d*f*x + c*f)/d))*cosh(-(d*e - c*f)/d) + (b^2*Ei(2*(d*f*x + c*f)/d)
+ b^2*Ei(-2*(d*f*x + c*f)/d))*cosh(-2*(d*e - c*f)/d) + 2*(2*a^2 + b^2)*log(d*x + c) - 4*(a*b*Ei((d*f*x + c*f)/
d) - a*b*Ei(-(d*f*x + c*f)/d))*sinh(-(d*e - c*f)/d) - (b^2*Ei(2*(d*f*x + c*f)/d) - b^2*Ei(-2*(d*f*x + c*f)/d))
*sinh(-2*(d*e - c*f)/d))/d

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

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*cosh(f*x+e))**2/(d*x+c),x)

[Out]

Integral((a + b*cosh(e + f*x))**2/(c + d*x), x)

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Giac [A]  time = 1.25399, size = 200, normalized size = 1.28 \begin{align*} \frac{b^{2}{\rm Ei}\left (-\frac{2 \,{\left (d f x + c f\right )}}{d}\right ) e^{\left (\frac{2 \, c f}{d} - 2 \, e\right )} + 4 \, a b{\rm Ei}\left (-\frac{d f x + c f}{d}\right ) e^{\left (\frac{c f}{d} - e\right )} + 4 \, a b{\rm Ei}\left (\frac{d f x + c f}{d}\right ) e^{\left (-\frac{c f}{d} + e\right )} + b^{2}{\rm Ei}\left (\frac{2 \,{\left (d f x + c f\right )}}{d}\right ) e^{\left (-\frac{2 \, c f}{d} + 2 \, e\right )} + 4 \, a^{2} \log \left (d x + c\right ) + 2 \, b^{2} \log \left (d x + c\right )}{4 \, d} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*cosh(f*x+e))^2/(d*x+c),x, algorithm="giac")

[Out]

1/4*(b^2*Ei(-2*(d*f*x + c*f)/d)*e^(2*c*f/d - 2*e) + 4*a*b*Ei(-(d*f*x + c*f)/d)*e^(c*f/d - e) + 4*a*b*Ei((d*f*x
+ c*f)/d)*e^(-c*f/d + e) + b^2*Ei(2*(d*f*x + c*f)/d)*e^(-2*c*f/d + 2*e) + 4*a^2*log(d*x + c) + 2*b^2*log(d*x
+ c))/d