How would you write a script file using the product symbol?

Suppose we are given the increasing set of points ξ1, ξ2, ..., ξn+1. For any j ∈ N[1,n + 1] the unique polynomial of degree n, say q(x), which satisfies q(ξk) =(1 if k = j ,0 otherwise this can be written as q(x) = Π (x−xk)/(xj −xk) .

I'm not really sure how you would solve this problem with a script file.

[Geoff Hayes]

Alyssa - is this homework? Please tag your question as such.

[Star Strider]

See also: What would a good script m-file that calculates A polynomial of degree n?