a = 2.4 (slider from -5 to 5, step 0.1)
b = 20 (slider from -5 to 100, step 0.1)
c = 0.1 (slider from -5 to 5, step 0.1)
f(x) = a / (1 + b * exp(-c * x))
A = (13, 0.05)
B = (21, 0.1)
C = (33, 0.2)
D = (40, 0.3)
E = (48, 0.36)
F = (50, 0.42)
G = (56, 0.5)
H = (59, 0.7)
I = (62, 0.82)
J = (64, 0.9)
K = (66, 1.1)
L = (76, 1.7)
M = (82, 2.08)
N = (86, 2.1)
O = (90, 2.25)
P = (97, 2.3)
Q = Intersect(xAxis, yAxis)
R = Point(xAxis)
u = Vector(Q, R)
f_1 = Translate(f, u)