anchor.diff:              InitialParamGuess       = initialParamGuess
               }
   
  -    /////////////////////////
  -    /// Hill equation "y = Vm * x^n / (k^n+x^n)"
  +        /////////////////////////
  +        /// Hill equation "y = Vm * x^n / (k^n+x^n)"
           let hillModel = 
               let parameterNames = [|"Vm";"n";"k"|]
               let getFunctionValues = (fun (parameters:Vector<float>) x -> 
  
positive.code:             InitialParamGuess       = initialParamGuess
              }
  
      /////////////////////////
      /// Exponential function of the form "y = a * exp(b * x)"
          let expModel = 
              let parameterNames = [|"a";"b"|]
              let getFunctionValues = (fun (parameters:Vector<float>) x -> 
  
negative.code:             InitialParamGuess       = [|Vm;n;k|]
              }
  
          /////////////////////////
          /// Logistic function of the form "y = L/(1+e^(k(t-x)))"
          [<Obsolete("Use the ascending and descending versions instead.")>]
          let LogisticFunction = {
              ParameterNames= [|"L - curve maximum";"k - Steepness"; "x0 xValue of midpoint"|]
  