f(x) = x^(2.0) / 2.0
P = Point(yAxis)
B = Point(f)
a = Line(P, B)
A = Intersect(f, a, 1.0)
g(x) = (y(B) - y(A)) / (x(B) - x(A)) * x + y(P)
Flaeche = Integral(g(x), f(x), x(A), x(B))
Flaecheninhalt: ((y(B) - y(A)) / (x(B) - x(A)), Flaeche)