Signals and systems/GF Fourier: Difference between revisions
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The Fourier series is used to analyze arbitrary periodic functions by showing them as a composite of sines and cosines. |
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A function is considered periodic if <math> x(t) = x(t+T)\, </math> for <math> T \neq 0 </math>. |
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Remember that <math>e^{j\theta} = cos \theta + jsin \theta \, </math> |
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