clarification

Thread Starter

jstrike21

Joined Sep 24, 2009
104
So i know (cos(wt)+jsin(wt))= e^(jwt)
does (cos(wt)-jsin(wt))= -e^(jwt) ?


Also, if i have 4e^(-j*pi/6)
does this equal 4cos(pi/6)-4jsin(pi/6)?
 
Last edited:

Thread Starter

jstrike21

Joined Sep 24, 2009
104
1. Simplify
[cos(w t) + j sin(wt)] * [cos(2 w t) - j sin(2 w t)]
and leave the result in polar form.

=(e^(jwt))*(e^(-2jwt))
=e^(-jwt)
correct?
 
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