3. For the linear delay DES = -32(t-T): (a) (3 points) Find the characteristic equation. (b) (9 points) Find the values of T for which there are two solutions x(t) of the form et (Show work. Don't just use a memorized formula.) (c) (9 points) Use the characteristic equation to find the values of T for which the solutions are oscillatory and unstable. (Again, show work.)