G=ριζα παραγωγου

a = 1.7 (slider from 0.1 to 5, step 0.1)
b = 0 (slider from -5 to 5, step 0.1)
c = 5 (slider from -5 to 5, step 0.1)
f(x) = a * x^(2.0) + b * x + c
g = Function(f, -3.0, 3.0)
μετακΑ = -2 (slider from -3 to 3, step 0.1)
A: (μετακΑ, g(μετακΑ))
μετακΒ = 2 (slider from -3 to 3, step 0.1)
B: (μετακΒ, g(μετακΒ))
h = Line(B, A)
i = Segment(B, A)
j = Slope(h)
k = Line(A, yAxis)
C = Intersect(k, xAxis)
l = Line(B, yAxis)
D = Intersect(l, xAxis)
m = Segment(A, C)
n = Segment(B, D)
μετακΕ = 0 (slider from -2 to 2, step 0.1)
E: (μετακΕ, g(μετακΕ))
q = Line(E, yAxis)
F = Intersect(q, xAxis)
r = Segment(F, E)
s = Tangent(E, g)
λ = Slope(s)
g' = Derivative(g)
Q: (-1.0 * 1.0 * b / (2.0 * a), g(-1.0 * 1.0 * b / (2.0 * a)))
G = Intersect(g', xAxis)