stefan1988
- 8
- 0
Im taking This class EEL3135 and I am very lost and confused as to how to study or where to find resources to understand the material.
does anybody know of a good website for beginner signal analysis? or a good reference ebook etc to help me out with it? the ones i seen are far too advanced and complicated for the stuff we doing.
here is the problem I am looking at.
a.Determine a formula for x(t) as the real part of a sum of complex exponentials.
b.what is the fundamental period for x(t)
c.plot the spectrum for x(t)
X(T)=sin^3(27PI t)
euler inverse cosθ=(e^θ+e^θ)/(2) i don't really understand why we use this formula
i started for first expansion i got
(-e^54pit)/4 +0.5+(e^-54pit)/4
after third expansion i got
(-e^81pit)/(8j)+(3e^27pit/8j)+(-3e^27pit)/(8j)+ (-e^81pit/8j)
is there an easier way to do this than big expansion?
does anybody know of a good website for beginner signal analysis? or a good reference ebook etc to help me out with it? the ones i seen are far too advanced and complicated for the stuff we doing.
Homework Statement
here is the problem I am looking at.
a.Determine a formula for x(t) as the real part of a sum of complex exponentials.
b.what is the fundamental period for x(t)
c.plot the spectrum for x(t)
X(T)=sin^3(27PI t)
Homework Equations
euler inverse cosθ=(e^θ+e^θ)/(2) i don't really understand why we use this formula
The Attempt at a Solution
i started for first expansion i got
(-e^54pit)/4 +0.5+(e^-54pit)/4
after third expansion i got
(-e^81pit)/(8j)+(3e^27pit/8j)+(-3e^27pit)/(8j)+ (-e^81pit/8j)
is there an easier way to do this than big expansion?