Question

The equation y= A cos²(2pi nt-2pi x/lamda) represents a
wave with
(a) Amplitude A/2, frequency 2n and wavelength 1/2
(b) Amplitude A/2, frequency 2n and wavelength 2
(c) Amplitude A, frequency 2n and wavelength 22
(d) Amplitude A, frequency n and wavelength a​

Answer 1

Answer:

answer in attachment