# binPol(RingElement,ZZ,ZZ) -- product of two binomial polynomials

## Synopsis

• Function: binPol
• Usage:
binPol(d,n,i)
• Inputs:
• d, , the variable of the polynomial ring
• n, an integer
• i, an integer, in [0,n]
• Outputs:
• a polynomial taking integers to integers

## Description

The polynomial of degree <= n, with values 0 for all d in [-n,0]-{-i} and with value (-1)^i when d = -i.
 i1 : QQ[d] o1 = QQ[d] o1 : PolynomialRing i2 : binPol(d,3,1) 1 3 5 2 o2 = -d + -d + 3d 2 2 o2 : QQ[d]