Function: polrecip
Section: polynomials
C-Name: polrecip
Prototype: G
Help: polrecip(pol): reciprocal polynomial of pol.
Doc:  reciprocal polynomial of \var{pol} with respect to its main variable,
 i.e.~the coefficients of the result are in reverse order; \var{pol} must be
 a polynomial.
 \bprog
 ? polrecip(x^2 + 2*x + 3)
 %1 = 3*x^2 + 2*x + 1
 ? polrecip(2*x + y)
 %2 = y*x + 2
 @eprog
