1. The problem statement, all variables and given/known data Solve du/dt=Pu when P is a projection. [1/2 1/2 = du/dt with 1/2 1/2] [5 = u(0). 3] Part of u(0) increases exponentially while the nullspace part stays fixed. 2. Relevant equations du/dt = Au with u=u(0) at t=0 3. The attempt at a solution I'm stuck with this problem. I was thinking that u(t)=eλt*x. Would du/dt be considered matrix A??? Thanks!