3. (2 pts) Suppose your MRI scanner should sample data, f^(km,kn) at points (km, kn) = A (m,n) for min=-N/2, -N/2+1, ... N/2-1. Due to eddy currents, it actually samples at points (mAx+81, NAK+E2). Describe two ways of recovering the desired complex valued function f(x1,x2). What shortcut could you take knowing a priori that fis real-valued? 4. (4 pts) Suppose in problem 3 (E1, E2) = m(1/3,1/2) for and f(x1,x2) = x(x1) x(x2) where x(x)=1 for \x{