φ(x)\,=\, \frac{1}{\sqrt{2\,\pi}}\,e^{- \frac{1}{2}\,x^2}

Integralfunktion

\Phi(x)\,=\, \int_{-\infty}^x\varphi(t)\, dt

f(x) = (1 / sqrt((2 * 3.141592653589793)) * exp((-(x^(2) / 2))))
x_r = Point(xAxis)
a = Integral(f, -10, x(x_r))
P: (x(x_r), a)
Ortslinie1 = Locus(P, x_r)
b = true