## expi

Exponential by orthogonal interpolation for itau object.

Exponential by orthogonal interpolation for itau object.

F = expi(x)

F = expi(A) is a function to approximate orthogonal interpolation the exp(A), where A is a matrix or a itau object.

A = independent tau variable (itau object) or any matrix.

F = polynomial approximation of exp(A) in [a, b] evaluated (with orthovalM) (itau object: F.mat contains the matrix).

sini, cosi, sinhi, coshi, expi, logi and sqrti.