Weitere Testkandidaten:

Für x1=-2, x2=-1, x3=0, x4=1, x5=2:

[y1,y2,y3,y4,y5] = ...

[1,1,1,1,1] : 0 x^3 + 0 x^2 + 0 x + 1

[1,1,-1,1,1] : 0 x^3 + 0.28571 x^2 + 0 x + 0.0285714

[1,2,3,2,1] : 0 x^3 + 0.42857 x^2 + 0 x + 2.65714

[1,2,3,3,3] : 0 x^3 + -0.21428 x^2 + 0.5 x + 2.8285

[1,2,3,3,5] : 0.16666 x^3 + 0.07142 x^2 + 0.33333 x + 2.65714

[2,2,3,3,5] : 2.57142 x^3 + 0.41666 x^2 + 0.21428 x + 0.08333