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== Guess the Periodic Signal== | == Guess the Periodic Signal== | ||
| − | 1. <math>x(t)\!</math> is real and | + | 1. <math>x(t)\!</math> is real and even<br> |
2. <math>x(t)\!</math> is periodic with period <math>T=4\!</math><br> | 2. <math>x(t)\!</math> is periodic with period <math>T=4\!</math><br> | ||
3. <math>a_0=3\!</math><br> | 3. <math>a_0=3\!</math><br> | ||
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== Solution == | == Solution == | ||
| − | <math>x(t)= | + | <math>x(t)=3cos(\frac{\pi}{2}t)\!</math> |
Latest revision as of 15:17, 26 September 2008
Guess the Periodic Signal
1. $ x(t)\! $ is real and even
2. $ x(t)\! $ is periodic with period $ T=4\! $
3. $ a_0=3\! $
4. $ -3<=x<=3\! $
Solution
$ x(t)=3cos(\frac{\pi}{2}t)\! $
