[理工] [工數] 100中正機械
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The periodic square wave or periodic pulse is shown in Figure.
The wave is the periodic extension of the f.
_
| 0, -1/2 < x < -1/4
|
|
f(x) = | 1, -1/4 < x < 1/4
|
|
|_ 0, 1/4 < x < 1/2
y |
_ _ _ _ _|_ _ _ _ _
| | | | ||| | | | |
| | | | ||| | | | |
------------------------- x
-1 | 1
|
(a) Please explain the Fourier series of the function f.
(b) Find the frequency spectrum of the function f.
看過解答 , 請問這題為什麼是用複數型的Cn去求係數?
這裡頭是有什麼觀念是小弟沒有注意到的嗎?
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