49?35.840?69?266?75.796?910?49?37.408?511?105?54.376?212?98?46.186?713?77?46.130?414?14?30.366?315?56?39.060?516?245?79.380?117?133?52.766?818?133?55.916?6];y=m(:,2);x1=m(:,3);x2=m(:,4);x3=x2.^2;%x3=x1.*x2/x3=x2.^2/x3=x1.^2x=[ones(18,1)x1x2x3];[b,bint,r,rint,stats]=regress(y,x,0.05)scatter(x1,y,'*k')scatter(x2,y,'*k')b=2.-62.34890.83965.68460.0371bint=-73.5027-51.19520.39511.28405.26046.10890.03300.0412r=-0.05120.3076-1.3718-0.6730-3.7605-1.35602.7129-0.48170.5130-0.37250.68422.6781-1.0293-0.39300.55611.35782.3248-1.6456rint=-3.77913.6766-3.53244.1475-4.41241.6688-4.46773.1217-6.6500-0.8710-4.21441.5023-0.73446.1602-4.21493.2516-2.61833.6443-4.18403.4390-2.64474.0132-0.72176.0779-4.73962.6810-3.81323.0272-3.26764.3798-0.46373.1793-1.03585.6855-5.26851.9773stats=1.0e+004*0.00011.107000.0003