SWeibull1

Function

$y=A(1-e^{-\left( k\left( x-x_c\right) \right) ^d})$

Sigmoidal Weibull function, type 1.

Reference: Seber, G. A. F., Wild, C. J. 1989. Nonlinear Regression. John Wiley & Sons, Inc. pp. 338 - 339

Number: 4

Names: A, xc, d, k

Meanings: A = amplitude, xc = center, d = power, k = coefficient

Lower Bounds: A > 0.0, k > 0.0

Upper Bounds: none

 nlf_sweibull1(x,A,xc,d,k)

FITFUNC\WEIBULL1.FDF

Growth/Sigmoidal

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