推 jack0711:frequency spectrum的關係，要化成相角型式 02/05 14:39
→ wLiSoN:謝謝樓上提供解答 02/06 17:10
找不到題目連結 自己打請各位見諒
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?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.27.160.249