On computing of arbitrary positive integer powers for one type of even order tridiagonal matrices with eigenvalues on imaginary axis - II

This paper is an extension of the work [J. Rimas, On computing of arbitrary positive integer powers for one type of even order tridiagonal matrices with eigenvalues on imaginary axis - I, Appl. Math. Comput., in press] in which the general expression of the lth power (l∈N) for one type of even order tridiagonal matrices is given. In this new paper we present the complete derivation of this general expression. Expressions of eigenvectors of the matrix and of the transforming matrix and its inverse are given, too.