Notice the minus sign in the exponential function, that is, 2exp(-(x-a)). Also notice that the exponential function is moving to the right at speed "a" (because of the minus sign) and the sine wave is moving to the right ( + sign) with speed "2a".
Finally, the black wave is a superposition of both the above mentioned waves.
Link to this comment:
Video Responses
All Comments (0)