Curvature Example 2

f(x) = x
g(x) = x^(1 / 2)
a = CurveCartesian(f(t), g(t), t, 0, 12)
v = 0.05 (slider from 0 to 12, step 0.01)
u = Vector(a(v), a(v) + UnitVector[a'(v)])
P: a(v)
c = OsculatingCircle(P, a)
h(x) = abs((f'(x) * g''(x)) - (g'(x) * f''(x))) / ((f'(x))^(2) + (g'(x))^(2))^(3 / 2)
b: h(v)
A: (v, h(v))