橢圓的光學性質
Author: 藍邦偉　老師

橢圓的光學性質

F = (4, 0)
F' = (-4, 0)
t = 6.147049625524029 rad (slider from 0 to 6.283185307179586, step 0.003490658503988659)
P: (5.0 * cos(t), 3.0 * sin(t))
a = Tangent(P, c)
n = OrthogonalLine(P, a)
u = Vector(F, P)
v = Vector(P, F')
w = Vector(F', P)
z = Vector(P, F)
b = Vector((x(Corner[1.0]), 0.0), (x(Corner[3.0]), 0.0))
d = Vector((0.0, y(Corner[1.0])), (0.0, y(Corner[3.0])))