t = [0,0.09,0.32,0.69,1.51,2.29,3.06,3.39,3.63,3.77];
y = [0,15.1,57.3,103.3,174.6,191.5,193.2,178.7,172.3,167.5];
plot(t,y,'ko-') ; grid
xlabel('t') ; ylabel('y')
inty = trapz(t,y)
