chepol - Chebychev polynomial

Calling Sequence

[Tn]=chepol(n,var)

Parameters

• 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')
 

Author

F. D.