f(x) = 1 / sqrt(x)
teksti1: "f(x)=" + (LaTeX[f]) + ""
B = (0, 0)
A = Point(xAxis)
c = Ray(B, A)
C = Point(c)
d = Integral(f, 1.0E-7, x(C))
a: x(C)
teksti2: "\int_{0}^{" + (LaTeX[a]) + "}{\left(" + (LaTeX[f]) + " \right)}dx=" + (LaTeX[d]) + ""