FITFUN

 

 Used by FITDEMONGMK34.

  FITFUN(lambda) returns the error between the data and the

  values computed by the current function of lambda.

  FITFUN assumes a function of the form

 

 

    y =  c(1)*exp(-lambda(1)*t) + ... + c(n)*exp(-lambda(n)*t)

 

 

  with n linear parameters and n nonlinear parameters.