Parabel
gitt ved y=ax^2+bx+c

Parametergrense

a = 0 (slider from -g to g, step 0.1)
b = 0.2 (slider from -g to g, step 0.1)
c = -2.4 (slider from -g to g, step 0.1)
f(x) = a * x^(2) + b * x + c
g = 10
tekstfelt1 = Textfield(g)