[理工] [工數]-Fourier Series
題目
K‧Sin(Tx) , 0 < X < (π/T)
f(x) = < 0 , -(π/T) < X < 0
答案 n
K K ∞ -K[(-1) + 1]
f(x) = ---- + ---Sin(Tx) + Σ ---------------Cos (nTx)
π 2 n=2 π(n^2 - 1)
主要是在a1這一項
我算出來是0
答案卻是 (K/2)Sin(Tx)
我的想法是
a1怎會包含X函數呢?
在積分完，範圍代入X之後
應該不會存在X函數吧?
問題主要在這邊
煩請大大們幫忙解答!
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