3. The time-dependent populations of susceptible (S), quarantined (Q) and recovered (R) persons during a viral pandemic are given by S(t) = S. (1 0.15 sin(at)) e-t/5 Q(t) = 0.05tS(t)e-t/5 R(t) = So S(t) Q(t) (a) Create a vector t that ranges from 0 to 15 and contains 270 points, and suppress the output of this computation. (b) Write MATLAB commands that produce overlaid plots of S(t), Q(t) and R(t) vs. t, where So 104 and 0