Euler Formula: Understanding (4.25) to (4.26)

pinkcashmere
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can someone explain how you go from (4.25) to (4.26) using Euler's formulas in the attachment?
 

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Although I downloaded and zoomed it I couldn't clearly identify the exponents. Did you test your upload?
 
fresh_42 said:
Although I downloaded and zoomed it I couldn't clearly identify the exponents. Did you test your upload?
Basically, I want to know how you go from
## ae^{jwt}## + ## be^{-jwt}##

to

##Asin(wt + \theta)##
 
ok, i got it now.
thanks
 

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