latex(x^2 + y^2 = z^2, res.txt);
> with(linalg):
matrix(2,2,[5,4,6,3]);
latex(subs(LambertW=lambertW,erf...=Erf,arctanh=Artanh,[%]),"C:/Users/Bravo/Desktop/test1.txt");
> latex(BesselK(nu, z)+BesselJ(nu, z),...output = string)
"{{\sl K}_{\nu}\left(z\right)}+{{\sl J}_{\nu}\left(z\right)}"
注意: LambertW erf arctanh