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==Energy of a CT signal==
 
  
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<math>E = \int_{t1}^{t2} |x(t)|^2\ dt \!</math>
 
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==Power of a CT signal==
 
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<math>P = \frac{1}{t2-t1} \int_{t2}^{t1} |f(t)|^2\ dt \!</math>
 
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==Energy of a DT signal==
 
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<math>E = \sum_{n=n1}^{n2} |x[n]|^2</math>
 
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==Power of a DT signal==
 
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<math>P = \frac{1}{n2-n1+1} \sum_{n=n1}^{n2} |x[n]|^2</math>
 

Latest revision as of 07:38, 5 September 2008

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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett