Implement a function, eigsimple, following the outline in Section XXXXXXXXXXIt should return just approximate eigenvalues or eigenvectors and a diagonal matrix of eigenvalues, depending on the number...

Implement a function, eigsimple, following the outline in Section 22.2.1. It should return just approximate eigenvalues or eigenvectors and a diagonal matrix of eigenvalues, depending on the number of output arguments. Test it on the nonsymmetric matrices qh882 and
 by estimating up to six eigenpairs and checking them with residchk.
 For qh882, use
 and for
 use