f(x) = 1 / x
a = 1 (slider from -5 to 5, step 0.1)
g(x) = a / x
b = 0 (slider from -5 to 5, step 0.1)
c = 0 (slider from -5 to 5, step 0.1)
h(x) = a / (x + b) + c
i: x = (-b)
A = Intersect(i, xAxis)
tekst1: "Dziedzina: x∈ R-{-" + b + "}"