Which of the following is holds true for the Chebyshev polynomial?
(a) Tm(-x) = (-1)^m Tm(x)
(b) Tm(-x) = (-1)^m Tm-1(1/x)
(c) Tm(x) = (-1)^m Tm(1/x)
(d) Tm(-x) = (-1)^m Tm-1(x)
This question was posed to me during a job interview.
My enquiry is from Adaptive Array topic in portion Phased, Adaptive and Binomial Arrays of Antennas