NP an/aus

a = 1 (slider from -5 to 5, step 0.25)
b = 0 (slider from -5 to 5, step 0.5)
c = 0 (slider from -5 to 5, step 0.5)
f: y = (a * x^(2)) + (b * x) + c
Text1 = LaTeX(f, true, true)
g: y = x^(2)
d = true