παραβολή

 Σημεία 

  τομής 

παραβολής 

     με

 ευθεία

c: y = (-x^(2)) + 4
a = Excentricity(c)
A = Point(c)
B = Point(c)
f = Line(A, B)
text1: "" + (LaTeX[f]) + ""
Α = (11.663489994510716, -2.271043913946771)
Β = (13.714194221659342, -2.271043913946771)