% SySc 512: Quant Meth: Homework 3.1, Eigenvalues and eigenvectors
clear all
A1 = [4   0
    [ 0   1 ]];
A2 = [1   0
    [ 0   -1 ]];
A3 = [0.7   -0.7
    [ 0.7    0.7 ]];
A4 = [0.8    1.8
    [  0     1.25 ]];
[evect1 eval1] = eig(A1);
[evect2 eval2] = eig(A2);
[evect3 eval3] = eig(A3);
[evect4 eval4] = eig(A4)