求matlab编程高手指点最小二乘法程序，不知道错在哪啊

x=[61.04, 244.14, 549.32, 976.56, 1525.88, 2197.27, 2990.72, 3906.25, 4943.85, 6103.52, 7385.25, 8789.06];%initial value n=12;%n为x的数目 y=[ ];%存放 y序列 For i=1：n temp1=1+a*x(i) temp2=1+b*x(i).^2-c*x(i)+a*x(i) y(i)=temp1./temp2 next i Print y End =[1.1278, 1.1833, 1.1111, 1.0866, 1.0793, 1.7018, 1.0621, 0.8423, 1.4921, 1.3306, 1.1057, 1.1509] ;%initial value k=12;%k为的数目 z=[ ];%存放 z序列 P=0 For i=1：k Z(i)=[y(i)-].^2 t=p+z(i) Next i M=Min(t) Print a,b,c Plot(x,y) End为什么会出现Warning: Could not find an exact (case-sensitive) match for 'For'.C:\Program Files\MATLAB\R2008b\toolbox\matlab\lang\for.m is a case-insensitivematch and will be used instead.You can improve the performance of your code by using exactname matches and we therefore recommend that you update yourusage accordingly. Alternatively, you can disable this warning usingwarning('off','MATLAB : ispatcher:InexactCaseMatch').This warning will become an error in future releases. ??? Attempt to execute SCRIPT for as a function:C:\Program Files\MATLAB\R2008b\toolbox\matlab\lang\for.m