[理工] [工數]- Fourier轉換的係數
最近被Fourier轉換的1/2π係數搞得有點混亂
∞
轉換→ F[f(t)] = ∫f(t)e^(-iwt)dt
-∞
反轉換→ f(t) = 1/2π {---省略}
^^^^^
這個係數有的書是寫在轉換那的2π ，是因為定義不同嗎?
Fourier cos轉換也是
∞
Fcos[f(t)] = 2 ∫f(t)coswt dt
0
^^^需要乘上2倍嗎?
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