Class 26

discuss Cayley-Hamilton theorem (problem 26 in Sect 6.1)
eigenvalues and eigenvectors continued; diagonalization (Sections 6.2)

Problems:

for the (orthogonal projection) matrix
A= [  .5 -.5  ]
   [ -.5  .5  ]

```
for
B= [  -1 -1  ]
   [   3  2  ]
```