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Eulers Formula variant

  • #1
Eulers formula says that e^ix = cosx + isinx

but in my text book theres another formula its e^ikx = coskx + isinkx
i still can't figure out how they got that. Is this still eulers formula? and how do u get it in that form
 

Answers and Replies

  • #2
1,341
3
e^iy = cosy + isiny

Let y = kx

e^ikx = coskx + isinkx
 

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