雙曲線的光學性質
Author: 藍邦偉　老師
Date: 10 12 月 2012

 雙曲線的光學性質

D: Corner[4] + (7, 0)
E: D - (0, 1.5)
F = (5, 0)
F' = (-5, 0)
t = 2.0036379812894904 rad (slider from 0 to 6.283185307179586, step 0.003490658503988659)
P: (4 / cos(t), 3 * tan(t))
u = Vector(F, P)
a = Line(P, F')
b, f = Tangent(P, c)
d = Segment(P, F')
e: x = x(Corner[2])
A = Intersect(a, e)
q = Vector(P, A)
v: x = x(Corner[1])
g = Segment(P, F)
h = Line(P, F)
B = Intersect(v, h)
w = Vector(P, B)
z = Vector(F', P)
C = Corner(4)
G: (x(Corner[1]), y(E))
多邊形1, c_1, d_1, e_1, g_1 = Polygon(C, D, E, G)
i = Vector((x(Corner[1]), 0), (x(Corner[3]), 0))
j = Vector((0, y(Corner[1])), (0, y(Corner[3])))