f(x)= A•G / ( A+(G-A)•e-kGx )
Beliebiges Wertepaar ( 42 | 169.5 )
f ( 42 ) = 8 * 254.5 / ( 8 + ( 254.5 - 8 ) * e-k*254.5*42 ) = 169.5
2036 / ( 8 + 246.5 * e-k*10689 ) = 169.5
2036 / 169.5 = 8 + 246.5 * e-k*10689
12.012 = 8 + 246.5 * e-k*10689
4.012 = 246.5 * e-k*10689
0.016275 = e-k*10689 | ln ( )
ln ( 0.016275 ) = -k*10689
-4.1181 / 10689 = - k
k = 0.0003853