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3. <math>\sum_{n=1}^{5}(-1)^nx[n] = 2</math> | 3. <math>\sum_{n=1}^{5}(-1)^nx[n] = 2</math> | ||
| − | 4. <math>a_k = a_ | + | 4. <math>a_k = a_{k+3}\,</math> |
Revision as of 12:15, 25 September 2008
Guess the Periodic Signal
A certain periodic signal has the following properties:
1. N = 6
2. $ \sum_{n=0}^{4}x[n] = 4 $
3. $ \sum_{n=1}^{5}(-1)^nx[n] = 2 $
4. $ a_k = a_{k+3}\, $
