| Line 12: | Line 12: | ||
===Answer 2=== | ===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. | 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=== | ===Answer 3=== | ||
write it here. | write it here. | ||
---- | ---- | ||
[[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 03:58, 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
write it here.
