3.7 \(\int \frac {\cosh (a+b x^2)}{x^3} \, dx\)

Optimal. Leaf size=42 \[ \frac {1}{2} b \sinh (a) \text {Chi}\left (b x^2\right )+\frac {1}{2} b \cosh (a) \text {Shi}\left (b x^2\right )-\frac {\cosh \left (a+b x^2\right )}{2 x^2} \]

[Out]

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

________________________________________________________________________________________

Rubi [A]  time = 0.09, antiderivative size = 42, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, integrand size = 12, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.417, Rules used = {5321, 3297, 3303, 3298, 3301} \[ \frac {1}{2} b \sinh (a) \text {Chi}\left (b x^2\right )+\frac {1}{2} b \cosh (a) \text {Shi}\left (b x^2\right )-\frac {\cosh \left (a+b x^2\right )}{2 x^2} \]

Antiderivative was successfully verified.

[In]

Int[Cosh[a + b*x^2]/x^3,x]

[Out]

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

Rule 3297

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

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 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 5321

Int[((a_.) + Cosh[(c_.) + (d_.)*(x_)^(n_)]*(b_.))^(p_.)*(x_)^(m_.), x_Symbol] :> Dist[1/n, Subst[Int[x^(Simpli
fy[(m + 1)/n] - 1)*(a + b*Cosh[c + d*x])^p, x], x, x^n], x] /; FreeQ[{a, b, c, d, m, n, p}, x] && IntegerQ[Sim
plify[(m + 1)/n]] && (EqQ[p, 1] || EqQ[m, n - 1] || (IntegerQ[p] && GtQ[Simplify[(m + 1)/n], 0]))

Rubi steps

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

________________________________________________________________________________________

Mathematica [A]  time = 0.05, size = 38, normalized size = 0.90 \[ \frac {1}{2} \left (b \sinh (a) \text {Chi}\left (b x^2\right )+b \cosh (a) \text {Shi}\left (b x^2\right )-\frac {\cosh \left (a+b x^2\right )}{x^2}\right ) \]

Antiderivative was successfully verified.

[In]

Integrate[Cosh[a + b*x^2]/x^3,x]

[Out]

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

________________________________________________________________________________________

fricas [A]  time = 0.46, size = 71, normalized size = 1.69 \[ \frac {{\left (b x^{2} {\rm Ei}\left (b x^{2}\right ) - b x^{2} {\rm Ei}\left (-b x^{2}\right )\right )} \cosh \relax (a) + {\left (b x^{2} {\rm Ei}\left (b x^{2}\right ) + b x^{2} {\rm Ei}\left (-b x^{2}\right )\right )} \sinh \relax (a) - 2 \, \cosh \left (b x^{2} + a\right )}{4 \, x^{2}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(b*x^2+a)/x^3,x, algorithm="fricas")

[Out]

1/4*((b*x^2*Ei(b*x^2) - b*x^2*Ei(-b*x^2))*cosh(a) + (b*x^2*Ei(b*x^2) + b*x^2*Ei(-b*x^2))*sinh(a) - 2*cosh(b*x^
2 + a))/x^2

________________________________________________________________________________________

giac [B]  time = 0.12, size = 108, normalized size = 2.57 \[ -\frac {{\left (b x^{2} + a\right )} b^{2} {\rm Ei}\left (-b x^{2}\right ) e^{\left (-a\right )} - a b^{2} {\rm Ei}\left (-b x^{2}\right ) e^{\left (-a\right )} - {\left (b x^{2} + a\right )} b^{2} {\rm Ei}\left (b x^{2}\right ) e^{a} + a b^{2} {\rm Ei}\left (b x^{2}\right ) e^{a} + b^{2} e^{\left (b x^{2} + a\right )} + b^{2} e^{\left (-b x^{2} - a\right )}}{4 \, b^{2} x^{2}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(b*x^2+a)/x^3,x, algorithm="giac")

[Out]

-1/4*((b*x^2 + a)*b^2*Ei(-b*x^2)*e^(-a) - a*b^2*Ei(-b*x^2)*e^(-a) - (b*x^2 + a)*b^2*Ei(b*x^2)*e^a + a*b^2*Ei(b
*x^2)*e^a + b^2*e^(b*x^2 + a) + b^2*e^(-b*x^2 - a))/(b^2*x^2)

________________________________________________________________________________________

maple [A]  time = 0.06, size = 58, normalized size = 1.38 \[ -\frac {{\mathrm e}^{-a} {\mathrm e}^{-b \,x^{2}}}{4 x^{2}}+\frac {{\mathrm e}^{-a} b \Ei \left (1, b \,x^{2}\right )}{4}-\frac {{\mathrm e}^{a} {\mathrm e}^{b \,x^{2}}}{4 x^{2}}-\frac {{\mathrm e}^{a} b \Ei \left (1, -b \,x^{2}\right )}{4} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cosh(b*x^2+a)/x^3,x)

[Out]

-1/4*exp(-a)/x^2*exp(-b*x^2)+1/4*exp(-a)*b*Ei(1,b*x^2)-1/4*exp(a)*exp(b*x^2)/x^2-1/4*exp(a)*b*Ei(1,-b*x^2)

________________________________________________________________________________________

maxima [A]  time = 0.39, size = 40, normalized size = 0.95 \[ -\frac {1}{4} \, {\left ({\rm Ei}\left (-b x^{2}\right ) e^{\left (-a\right )} - {\rm Ei}\left (b x^{2}\right ) e^{a}\right )} b - \frac {\cosh \left (b x^{2} + a\right )}{2 \, x^{2}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(b*x^2+a)/x^3,x, algorithm="maxima")

[Out]

-1/4*(Ei(-b*x^2)*e^(-a) - Ei(b*x^2)*e^a)*b - 1/2*cosh(b*x^2 + a)/x^2

________________________________________________________________________________________

mupad [F]  time = 0.00, size = -1, normalized size = -0.02 \[ \int \frac {\mathrm {cosh}\left (b\,x^2+a\right )}{x^3} \,d x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cosh(a + b*x^2)/x^3,x)

[Out]

int(cosh(a + b*x^2)/x^3, x)

________________________________________________________________________________________

sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \frac {\cosh {\left (a + b x^{2} \right )}}{x^{3}}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cosh(b*x**2+a)/x**3,x)

[Out]

Integral(cosh(a + b*x**2)/x**3, x)

________________________________________________________________________________________