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Evo8
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Homework Statement
So I am a little rusty on my basic math and I am trying to simplify this expression. In case you were curious the expression came from a signal block diagram that I calculated the transfer function H(z) to then found the frequency response H(f) and I think i have done that correctly I just need to reduce this further. I have attached a picture of what I have left. The theta stands for exp(j2pifT) if that maters to you.
Homework Equations
The Attempt at a Solution
So this is where I get confused and can't remember the proper rules. These are super basic I know. Unfortunately I never learned them that well to begin with which is why I am having trouble now..
the terms that are j*sin(-2*theta) can I bring the -2 out of the sin function? Same with the cosine? I want to say no but part of me feels like you can... If so I am thinking this might help me cross out a few terms?
Or if i break it up into sections i get something like this for the first few terms. -2/4 * cos(-theta)/cos(-theta). I then feel like i can cross out the cosine terms and be left with -1/2? Same with the -2jsin(theta)/4jsin(theta) etc.
Am I going about this correctly? Some of it just doesn't seem right to me.
I really appreciate any help here guys/girls.
Thanks
p.s. Sorry if my handwriting is messy. I tried my best to write it down as neat as possible. I figured it would be easier to see if i took a picture rather then type it out here and have you try to understand what I am looking at.
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