Streckfaktor in y-Richtung:

\mbox{neue Funktion: }f(x)=k_y \cdot x^2

k_y = 2.5 (slider from -3 to 5, step 0.25)
p(x) = x^(2.0)
f(x) = k_y * x^(2.0)
A = (1, 1)
B: (1.0, k_y)
C: (0.5, k_y * 0.5^(2.0))
D = (0.5, 0.25)
E = (1, 0)
u = Vector(E, B)
v = Vector(E, A)