a positive definite matrix has eigenvalues λ=1 and λ=2. find the matrix
The Attempt at a Solution
I've used a 2x2 matrix with entries a0,a1,a2,a3 as the unknown matrix but no use. (As little as i know a0 and a3 should be 1 and 2 respectively; corresponding to the eigenvalues) Any ideas on how to solve this?