Parabola & Circle
Circle tangent to x=0, y=L, and y=x²/L — Newton's method on a quintic
Unit square
Parabola y = x²
Inscribed circle
Tangent point & radius
Construction lines
f(u) = 8u⁵ + u⁴ − 6u³ + 2u² − 2u + 1 = 0
r = t(L² − 2t²) / L(2t − L)
C = (r, L − r)
Inscribed
Mirror
Outer
Same law — different frame — different form
← Neuro