The middle note c has a frequency of 262 hertz and can be modeled using a sine function with an amplitude of 1.5, where x is time in seconds. which function represents the vibrations of this note? y = three-halves sine (26 pi x) y = three-halves sine (524 pi x) y = 3sin(262Ï€x) y = 3sin(524Ï€x)