Achtung Hochwasser!!!
Author: Torsten Warncke
Date: Februar 2005

f(x)=\frac{-5 x^4 + 41 x^3 - 111 x^2 + 119 x}{10}

f(x) = (-5 x⁴ + 41 x³ - 111 x² + 119 x) / 10
B = Point(f)
t = Tangent(B, f)
Δy = Slope(t)
y_{Δy} = Segment((x(B), 0), (x(B), 0 + Δy))
f' = Derivative(f)
H_1, T, H_2 = Extremum(f)
A, W_2 = TurningPoint(f)