(f)
return f.per(dmp_neg(f.rep, f.lev, f.dom))
Negate all coefficients in ``f``.
Negate all coefficients in ``f``.
Negate all coefficients in f .
def neg(f):
        """Negate all coefficients in ``f``. """
        return f.per(dmp_neg(f.rep, f.lev, f.dom))
def neg ( f ) : return f . per ( dmp_neg ( f . rep , f . lev , f . dom ) )