- #1

Edge5

- 22

- 0

(I think I couldn't add the image)

you can see my answer in link

https://pasteboard.co/HPKZ6KD.jpg

(Please first see my answer in the link)

But in answer it is φ= Asin(kx) + Bcos(kx)

I know that euler formula is e

^{ix}= cosx +isinx

But I can't get this answer can you help me?