Determine the polynomials P ∈ R [ X ] {\displaystyle {}P\in \mathbb {R} [X]} that define an affine-linear mapping
![{\displaystyle {}P\in \mathbb {R} [X]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/9bf6bcf64e16c3ac6b30ecd6577e72648ab2325a)
