Coûts variables C_V

Coût marginal C_M

Coût variable moyen Cv_m

Point d'inflexion

O = (0, 0)
f = Function(x^(3) - 12 * x^(2) + 60 * x, 0, 10)
g = Function(f'(x), 0, 10)
Cv_M = Function(f(x) / x, 0, 10)
D = Point(f)
d = Tangent(D, f)
c = Slope(d)
I = TurningPoint(f)
q_0: (x(I), 0)
A = Min(g, 0, 10)
B = Min(Cv_M, 0, 10)
q_1: (x(B), 0)
a = OrthogonalLine(B, xAxis)
C = Intersect(f, a, 1)
b = Tangent(C, f)