assignments:a1
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| assignments:a1 [2011/09/28 20:15] – asif | assignments:a1 [2011/09/28 20:16] (current) – asif | ||
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| //Q2. How do i Evaluate and find the period of exp(-j*pi*k).// | //Q2. How do i Evaluate and find the period of exp(-j*pi*k).// | ||
| - | A2. Note that exp(-j*pi*k) = cos(pi*k) - j sin(pi*k) | + | A2. Note that exp(-j*pi*k) = cos(pi*k) - j sin(pi*k). |
| Since sin(pi*k) = 0, therefore, exp(-j*pi*k) = cos(pi*k) which has a period of pi radians/s or 1/2 Hz. | Since sin(pi*k) = 0, therefore, exp(-j*pi*k) = cos(pi*k) which has a period of pi radians/s or 1/2 Hz. | ||
assignments/a1.1317240953.txt.gz · Last modified: 2011/09/28 20:15 by asif