Cas n = 4

Afficher F(1)

f(x) = 1 / (1 + x^(2))
n = 4 (slider from 0 to 50, step 1)
a = LowerSum(f, 0, 1, n)
b = UpperSum(f, 0, 1, n)
texte1: "b - a = " + (b - a)
I = Integral(f, 0, 1)
c = false
texte2: "F(1) ≈  " + I + ""