i

j

A = Intersect(xAxis, yAxis)
s1 = (1, -1)
s2 = (2, 1)
a11: x(s1)
a21: y(s1)
a12: x(s2)
a22: y(s2)
F: {{a11, a12}, {a21, a22}}
tekst1 = LaTeX(F, true, true)
D = (0, 1)
C = Point(xAxis)
E = Point(yAxis)
u = Vector(A, C)
v = Vector(A, E)
B = (-0.3128683057104167, 1.993653377089357)
G = (-2.7590599720953874, 1.993653377089357)
ledelinje = Segment(B, G)
brændpunkt = (-1.5007309256010626, 1.7621208325344013)
c = Parabola(brændpunkt, ledelinje)
I = Point(c)
w = Vector(A, I)
I' = ApplyMatrix(F, I)
b = Vector(A, I')