30.1.12 Biphasic

1 Function
2 Brief Description
3 Sample Curve
4 Parameters
5 Script Access
6 Function File
7 Category

Function

$y=A_{\min }+\frac{(A_{\max 1}-A_{\min })}{1+10^{((x-x0\_1)*h1)}}+\frac{(A_{\max 2}-A_{\min })}{1+10^{((x0\_2-x)*h2)}}$

Brief Description

Biphasic Sigmoidal Dose Response (7 parameters logistic equation).

Sample Curve

Parameters

Number: 7

Names: Amin, Amax1, Amax2, x0_1, x0_2, h1, h2

Meanings: Amin = bottom, Amax1 = first top asymptote, Amax2 = second top asymptote, x0_1 = first median, x0_2 = second median, h1 = first slope, h2 = second slope

Lower Bounds: none

Upper Bounds: none

Script Access

nlf_biphasic(x,Amin,Amax1,Amax2,x0_1,x0_2,h1,h2)

Function File

FITFUNC\BIPHASIC.FDF