Intégrale d'une courbe de Gauss

f(x) = 1 / sqrt(2 * π) * ℯ^((-x^(2)) / 2)
A = Point(xAxis)
B = Point(xAxis)
n = 5 (slider from 1 to 50, step 1)
SomSup = UpperSum(f, x(A), x(B), n)
texte1: "Somme majorante = " + SomSup + ""
SomInf = LowerSum(f, x(A), x(B), n)
texte2: "Somme minorante = " + SomInf + ""
Integ = Integral(f, x(A), x(B))
c_1 = 0
texte3: "Intégrale de a à b = " + Integ + ""