| Line 8: | Line 8: | ||
3. <math>\sum_{n=0}^{3}x[n](-j)^n = -20j</math> | 3. <math>\sum_{n=0}^{3}x[n](-j)^n = -20j</math> | ||
| − | 4. <font "size"=4> <math>a_{-k} = a_{k}</math> </font> | + | 4. <font "size"=4> <math>a_{-k} \; = \; a_{k}</math> </font> |
Revision as of 19:42, 24 September 2008
Determine the Periodic Signal
A periodic signal x[n] has the following characteristics:
1. N = 4
2. The average value of the signal over the interval $ 0 \leq n \leq 7 $ is 0.
3. $ \sum_{n=0}^{3}x[n](-j)^n = -20j $
4. $ a_{-k} \; = \; a_{k} $
