% mm2002.mx = [0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1];y = [-.447 1.978 3.28 6.16 7.08 7.34 7.66 9.56 9.48 9.30 11.2];n = 2;p = polyfit(x,y,n);xi = linspace(0,1,100);yi = polyval(p,xi);plot(x,y,'-o',xi,yi,'--')xlabel('x'), ylabel('y=f(x)')title('Figure 20.2: