a = 0.3 (slider from -5 to 5, step 0.1)
b = -0.6 (slider from -5 to 5, step 0.1)
c = -1.4 (slider from -5 to 5, step 0.1)
parabel: y = (a * x^(2)) + (b * x) + c
d: b^(2) - ((4 * a) * c)
grene = If(a > 0, "opad", "nedad")
antalrødder = If(d > 0, "2", "0")
A = Intersect(parabel, yAxis, 1)
tangent = Tangent(A, parabel)