% Yeast problem from Section 2.3 in the book. Prob #22
clear all, close all
t=0:1:18;
y=[9.6 18.3 29.0 47.2 71.1 119.1 174.6 257.3 350.7 441.0 513.3 559.7 ...
    594.8 629.4 640.8 651.1 655.9 659.6 661.8];