- matrix( <affin function>, [variable] )
- Description: returns the matrix of the <affin function>, by default the <variable> is $z$. The matrix is the like: [f(0), Lf(1), Lf(i)], f is the affine map, and Lf its linear part, more precisely : Lf(1)=f(1)-f(0) and Lf(i)=f(i)-f(0).
- Exemple(s): matrix(i*bar(z)) returns [0,i,1].