1. The problem statement, all variables and given/known data Let there be a 4X4 Matrix A with dim(im(A), or rank = 1 , and trace=10. What are the Eigenvalues of A? Are there any multiplicities? 3. The attempt at a solution While I understand that the trace of a matrix that's 4X4 = the sum of the diagonal elements, I'm confused about how to create this matrix A to find the eigenvalues, and how to represent the given fact that dim(im(A)) = 1. Any tips/pointers would be helpful!