This problem illustrates convergence of the double shift implicit iteration to a single real or a complex conjugate pair of eigenvalues. Create the upper Hessenberg Toeplitz matrix Compute its...

This problem illustrates convergence of the double shift implicit

iteration to a single real or a complex conjugate pair of eigenvalues.

Create the upper Hessenberg Toeplitz matrix

Compute its eigenvalues using eig.

Execute

six times and observe what happens in the lower right-hand corner of
Comment.

Execute

six times and then apply the statement