[no subject]

   If the initial guess is (a,b,c) = (1,1,1), the program arrives at:

   (a,b,c) ==  (16.3355999, -0.03256876, 1.68292832)

   This is the wrong answer.

Yes.  In fact it went outside the range I specified for a.

Now pick a new random starting point and retry.  Sometimes the algorithm
converges, sometimes it does not.  But we can compare the cases where
it does converge and pick the best (in the least squares sense).

How does that sound?

Morten