Streckfaktor in y-Richtung:

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

k_y = 3 (slider from -2 to 5, step 0.5)
A = (0, 0)
B = (0.5, 0.25)
C = (1, 1)
E: (1.0, k_y)
D = Point(xAxis)
u = Vector(D, E)
f_0(x) = (x - 0.019999999999999962)^(2.0) + 0.020000000000000004
f(x) = k_y * x^(2.0)
F: (0.5, k_y * 0.25)