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resolve in matlab please

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Abdelrazzak rifai
Abdelrazzak rifai 2018-4-12
回答： Walter Roberson 2018-4-12
i am new in matlab and i don't have any idea about it. the professor gave us this. really i don't understand. :(
arryf A , s=cosAt+cos3t
define a sum of cosine waves"number of waves is the last number in your credit book. with different frequency en Hz.
2. build it's plot in time domain.
3. build the plot of it's magnitude spectrum
  2 个评论
Walter Roberson
Walter Roberson 2018-4-12
I do not know what "arryf A" is intended to mean?
Abdelrazzak rifai
Abdelrazzak rifai 2018-4-12
编辑：Walter Roberson 2018-4-12
please if you can give me an example a function using array.
define a sum of cosine waves"number of waves is the last number in your credit book. with different frequency en Hz.
build it's plot in time domain.
build the plot of it's magnitude spectrum
please if you can give me an example about this task. if you have any idea, exampls,etc,,

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回答（1 个）

Walter Roberson
Walter Roberson 2018-4-12
number_of_samples = 1025;
wave = 0;
for wavenum = 1 : 8 %presuming your last number is 8
wave = wave + generate_sinewave(wavenum * 83, number_of_samples); %83 Hz apart
end
You would need to write generate_sinewave()

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