A1 = 1
A2 = 2
A3 = 3
A4 = 4
B1 = 350
B2 = 365
B3 = 352
B4 = 330
B5 = 280
A5 = 7
A: (A1, B1)
B: (A2, B2)
C: (A3, B3)
D: (A4, B4)
E: (A5, B5)
liste1: {A, B, C, D, E}
f = Polynomial(liste1)
a = Tangent(A, f)
b = Tangent(B, f)
c = Tangent(C, f)
d = Tangent(D, f)