I am facing some difficulties solving one of the questions we had in our previous exam. I am sorry for the bad translation , I hope this is clear. In each section, find all approppriate matrices 2x2 (if exists) , which implementing the given conditions: is an eigenvector of A with eigenvalue of 10 , and is an eigenvector of A with eigenvalue of 20 . is an eigenvector of A with eigenvalue of 10 , and EXISTS eigenvector of A with eigenvalue of 20 If there are no matrices matched , explain why. 3. The attempt at a solution I tried to build equations for the first section but I have no idea how to keep from there : Can you please assist ? Thanks.