- #1
Slimy0233
- 167
- 48
My professor was teaching me about the superposition of two waves and after this derivation, he marked ##2Acos(\frac{dk}{2}x -\frac{d\omega}{2}t)## as the oscillation part and ##sin (Kx-\omega t)## as the oscillation part, I don't understand why? Any answers regarding this would be considered helpful.
My main question would be, why did he choose sin part as the oscillation and why not the cos part and more importantly, why not both? I mean, my bad intuition tells me, that I should include both.