chepol

Arguments

n

integer : polynomial order

var

string : polynomial variable

Tn

polynomial in the variable var

Description

Recursive implementation of Chebychev polynomial. Tn=2*poly(0,var)*chepol(n-1,var)-chepol(n-2,var) with T0=1 and T1=poly(0,var).

Examples

chepol(4,'x')