SYMPOWER

This program is designed for finding the largest eigenvalue but exploits the symmetry of a matrix to speed up computations. If the matrix is not symmetric, then do not use this code. It is specifically designed for only symmetric matrices. 

User inputs:
1) Symmetric matrix [A]
2) Initial guess [B]

Outputs:
1) Error message for zero eigenvalue,
2) Error message for unsuccessful completion (may need to increase the number of iterations done)
3) Largest Eigenvalue with associated eigenvector (approximations of course).


Enjoy!
