(49g 50g) Chebyshev U Polynomials - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: General Software Library (/forum-13.html) +--- Thread: (49g 50g) Chebyshev U Polynomials (/thread-15068.html) |
(49g 50g) Chebyshev U Polynomials - John Keith - 05-26-2020 07:37 PM This program returns the value of the nth Chebyshev U polynomial at x. Note that the built-in function TCHEBYCHEFF returns the nth Chebyshev T polynomial. Chebyshev T polynomials are also known as Chebyshev polynomials of the first kind, and the U polynomials as Chebyshev polynomials of the second kind. Note also that there are many spellings of Chebyshev! To use the program, n should be on level 2 and should be an integer. x should be on level 1; if x is an integer the result will be an integer. If x PEVAL in line 6 is removed the program will return the coefficients of the nth polynomials as a list. Code:
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