Nouvelle parabole

Bravo!

a = 2 (slider from -5 to 5, step 1)
h = -1 (slider from -5 to 5, step 1)
k = 5 (slider from -10 to 10, step 1)
d(x) = Random[-4, 4] / (x + Random[-4, 4]) + Random[-6, 6]
f = Expand(d)
s(x) = a / (x - h) + k