Question:
Matrices
Let
B = [ 1 1 2 2 ]
[ 1 1 2 2 ]
[ 2 2 1 1 ]
[ 2 2 2 1 ]
Find each of the following. You may use a calculator to replace hand calculation for row reduction and finding the characteristic polynomial. Show your work; don't just write down the answers.
(a) Find the characteristic polynomial of "A".
(b) Find the eigenvalues of "A"; for each, find the algebraic multiplicity.
(c) Find a basis for each eigenspace.
(d) Diagonalize "A" ; that is, find: S ,Λ , and, S-1 such that A = S Λ S-1 .