## coshm

Hiperbolic cosine for matrix for itau object.

Hiperbolic cosine for matrix for itau object.

F = coshm(x, coef)

F = coshm(x) returns the F matrix suth that F is the Taylor series expansion for function of matrices. Here is used Malab's function "funm" for our x property, matrixM(x) = M.

x = independent tau variable (itau object).

coef = coefficients of a polynomial (double vector). If coef is informed, then we want cosh(sum[coef_iP_i(M)]).

F = matrix sized by [x.n x.n], translating cosh(M) in terms of its Taylor series expansion (double matrix in F.mat).

sinm, sinhm, cosm, expm, logm and sqrtm.