請移動點 K , 觀察點 P 的軌跡

圓B:(x-2)²+y²=49

圓A:(x+2)²+y²=1

A = Point(xAxis)
K = Point(d)
B = (2, 0)
a = Segment(B, K)
b = Segment(A, K)
C = Intersect(e, d)
P = Intersect(f, a, 1.0)
g = Line(P, A)
D = Intersect(c, g, 2.0)
h = Circle(P, D)