eq1: x^(2) + y^(2) = 5
O = Point(xAxis)
C = (0, 0)
p = Point(eq1)
f = Segment(O, p)
g = LineBisector(f)
h = Segment(p, C)
P = Intersect(g, h)
c = Ellipse(O, C, P)
κ = Curvature(P, c)
pO = Distance(p, O)
A = Intersect(g, f)
α = Angle(p, P, A)
CP = Distance(C, P)
d: ((pO^(2) * κ) * CP^(2) / sin(α))
text2: "\frac{|pO|^2 κ}{\frac1{|CP|^2} \sin(α)}=" + (LaTeX[d]) + ""