Man finde ein Polynom f ∈ R [ X ] {\displaystyle {}f\in \mathbb {R} [X]} mit f ( 0 ) = 0 {\displaystyle {}f(0)=0} , f ( 1 ) = 1 {\displaystyle {}f(1)=1} , f ( − 1 ) = 1 {\displaystyle {}f(-1)=1} und f ( 3 ) = 9 {\displaystyle {}f(3)=9} .
![{\displaystyle {}f\in \mathbb {R} [X]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/d31126c4b00488e60d4e2836a59c34f6073f62d9)
