μ = 0 (slider from -100 to 100, step 1)
σ = 20 (slider from 0.5 to 50, step 0.5)
f(x) = exp(-(((x - μ) / σ)^(2) / 2)) / (σ * 2.5066282746310002)
A = Point(xAxis)
p = Integral(f, -500, x(A))
T1: "p = " + p
T2: "P( x < " + (x(A)) + " ) = " + p