Question

The pulse in case A is described by the function y(x, t) = p(x-vt). 1) Which of the following functions describes the pulse in case B?
A) y(x, t) = p(x+vt)
B) y(x, t) = p(x-vt)
C) y(x, t) = p(x+2vt)
D) y(x, t) = p(x-2vt)