FCS Express 5 has the ability to fit your data to many different types of equations.
Below you will find a table indicating the equation, the formula associated with it, and the parameters defined in FCS Express when a fit is performed.
Equation Name  | 
FCS Express Function Name  | 
Equation  | 
Variables  | 
Michaelis Menten  | 
MichMenten  | 
 
  | 
Vmax, Km  | 
TwoSiteBinding  | 
TwoSiteBinding  | 
  | 
Vmax, KM, Vmax2, KM2  | 
Four Parameter Logistic (4PL)  | 
FourParmLogistic  | 
  | 
Imax, Imin, IC50, Hill  | 
Five Parameter Logistic (5PL)  | 
FiveParmLogistic  | 
  | 
Imax, Imin, IC50, Hill, Asym  | 
Boltzmann  | 
Boltzmann  | 
  | 
Bottom, Top, V50, Slope  | 
Exponential  | 
Exponential  | 
  | 
A, M, C  | 
Two Phase Exponential  | 
TwoPhaseExponential  | 
  | 
A, M, A2, M2, C  | 
Exponential Association  | 
ExpAssociation  | 
  | 
Ymax1, K1  | 
Two Phase Exponential Association  | 
TwoPhaseExpAssociation  | 
  | 
Ymax1, K1, Ymax2, K2  | 
Exponential Grow  | 
ExponentialGrow  | 
  | 
A, M, C  | 
Power  | 
Power  | 
  | 
A1, B1, K  | 
Power Series  | 
PowerSeries  | 
  | 
A1, B1, A2, B2, K  | 
Linear  | 
Linear  | 
  | 
m, b  | 
Parabolic  | 
Parabolic  | 
  | 
m, b, A2  | 
Cubic  | 
Cubic  | 
  | 
m, B, A2, A3  | 
Sine Wave  | 
SineWave  | 
  | 
Baseline, Amplitude, Frequency, Offset  | 
Gaussian  | 
Gaussian  | 
  | 
A, SD, xMed, K  | 
Sigmoidal  | 
Sigmoidal  | 
  | 
A, B, C  | 
Decreasing Sigmoidal  | 
SigmoidalDec  | 
  | 
A, B, C  |