Problem 5.1 -- I suggest solve by HAND, then check via MATLAB eig command.
As mentioned in the solutions to Problem 4.1, you can use MATLAB to get solutions to an eigenvalue problem:
[v,d]= eig(k,m)
You can solve this problem however you wish! But clearly you are doing yourself
a favor if you try to solve them by hand, first and THEN check your answers with
MATLAB because:
1. These systems are simple enough it won't take you long to solve them by hand.
2. You won't have MATLAB on a quiz.
3. Quizzes count for way more than the homeworks in this class.