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Jan24-13, 05:09 PM
P: 5,462
Difficult to coordinate three posts about your lecture notes and experimental lab, but here goes.

No the equations are not the same.

Look again at the equations you posted in your thread about SHM and your notes.

There is something in the equation of a stationary wave that is not in the equation of SHM.

Can you see what it is, because this difference is what makes SHM different from wave motion?