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:Instructor's comment: Yes, that's the idea. Now can you justify your answer "in math" instead of "in words"? -pm | :Instructor's comment: Yes, that's the idea. Now can you justify your answer "in math" instead of "in words"? -pm | ||
===Answer 3=== | ===Answer 3=== | ||
| − | + | The answer is zero since impulse function is 0 everywhere except n = 0. | |
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[[2011_Fall_ECE_438_Boutin|Back to ECE438 Fall 2011 Prof. Boutin]] | [[2011_Fall_ECE_438_Boutin|Back to ECE438 Fall 2011 Prof. Boutin]] | ||
Revision as of 08:21, 26 August 2011
Contents
Simplify this summation
$ \sum_{n=-\infty}^\infty n \delta [n] $
You will receive feedback from your instructor and TA directly on this page. Other students are welcome to comment/discuss/point out mistakes/ask questions too!
Answer 1
The answer is 0 ?
- Instructor's comment: Yes, it's zero. Can you justify your answer? -pm
Answer 2
The delta function is zero everywhere except when n=0 and since we are multiplying the delta by n the answer would thus be 0.
- Instructor's comment: Yes, that's the idea. Now can you justify your answer "in math" instead of "in words"? -pm
Answer 3
The answer is zero since impulse function is 0 everywhere except n = 0.
