Fitting Data



Ok, now that I tried the real equation, it failed.  I am not sure of
what the error message is telling me:

(%i168) M:matrix([1,.0381],[3,.1371],[5,.2158],[7,.3319],[9,.4302],[11,.5276],[13,.6299],[15,.7200]);
                                [ 1   0.0381 ]
                                [            ]
                                [ 3   0.1371 ]
                                [            ]
                                [ 5   0.2158 ]
                                [            ]
                                [ 7   0.3319 ]
(%o168)                         [            ]
                                [ 9   0.4302 ]
                                [            ]
                                [ 11  0.5276 ]
                                [            ]
                                [ 13  0.6299 ]
                                [            ]
                                [ 15   0.72  ]
(%i169) lsquares_estimates(M,[L,n],L+.4*d=n*l/4,[l]);

`sublis': Bad 1st arg
#0: lsquares_mse(data%=data,variables=[0.72,15],equation=0.73524 =
0.7725)(lsquares.mac line 259)
#1: lsquares_estimates(data=matrix([1,0.0381],[3,0.1371],[5,0.2158],[7,0.3319],[9,0.4302],[11,0.5276],[13,0.6299],[15,0.72]),variables=[0.72,15],equation=0.73524
= 0.7725,parameters=[0.206],optional_args=[])(lsquares.mac line 243)
 -- an error. To debug this try: debugmode(true);

d was defined earlier, so it has a numerical value.  Any pointers
would be appreciated.

Thanks,
Chris Maness