View Single Post
HallsofIvy
#4
Aug13-08, 08:07 AM
Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,310
Euler's identity

Quote Quote by jaejoon89 View Post
How does y = e^(x(1-i)) + e^(x(1+i))
work out to y = (e^x)sinx + (e^x)cosx???
Obviously, by Euler's identity, (e^x)sinx+ (e^x)cosx= e^(x(1+i)) only, not that sum.