4. Please do the following by hand calculations. Show all steps. Find the solution of the following state equations. (a) (t) = [ ] x (1), x (0) = xo 2 0 0 0-2 2 3 (1), 2 (0) = 20 0 1 (b) i (t): (c) * (t): -1 1 1 1 x (t), x (0) 1 0 0 0 x (0) = ro