Providing the mean function and the corresponding self starter function for the asymptotic regression model.

meAR.2(x, d, e)

meAR.3(x, c, d, e)

Arguments

x	numeric vector specifying the dose
d	upper limit
e	$e>0$ is determining the steepness of the increase as $x$
c	lower limit at at $x=0$

Details

The asymptotic regression model is a three-parameter model with mean function: $$f(x) = c + (d-c)(1-\exp(-x/e))$$ The parameter $c$ is the lower limit (at $x=0$), the parameter $d$ is the upper limit and the parameter $e>0$ is determining the steepness of the increase as $x$.