binomial -- binomial coefficient

Synopsis

• Usage:
binomial(n,k)
• Inputs:
• Outputs:
• the binomial coefficient, the coefficient of x^k in (1+x)^n

Description

 i1 : binomial(13,6) o1 = 1716 i2 : binomial(-1,3) o2 = -1

Caveat

Doesn't do polynomials, things like binomial(x,3) where x is an element of a ring other than ZZ

Ways to use binomial :

• "binomial(ZZ,ZZ)"
• binomial(RingElement,ZZ) (missing documentation)

For the programmer

The object binomial is .