Mathematical representation of wave motion

Covers sections 15.1 - 15.3. About 28 minutes long.

[JO-mgxc]

Dr. Chabot. I loved your explanation of the reset to (0, 0). Could you do a video on a traveling wave using the a circle of radius r and angle theta to created the wave and the equation Psi= A Sin (kx -wt). K 2pi.lambda, w = angular velocity. Just like you did it but using complex numbers. r (cos(theta) + isin (theta)) = r e -itheta. Also, does kx-wt = 0 for reset back to (0, 0) at every point?

[moner]

Alright, which one of you disliked this?

[ssddd]

Wave equation when we use cos when we use sin?