→ honestonly:忘記打 (4)的答案是c 02/08 18:48
推 kagato:(4)=> 4sin^2(w/2) / w^2 = 兩個方波的convolution 02/08 19:31
→ kagato:第六小題我覺得是d Orz 02/08 19:37
推 bjackal:第六提 d 02/08 21:43
→ honestonly:噢噢..那我還是錯了QQ 02/08 22:47
→ honestonly:噢不= =..那如果沒有記兩個方波的convolution咧= =? 02/08 22:48
→ doom8199:那就把 三角波的 FT 是 A[sinc(aw)]^2 記下來~~ 02/08 22:54
推 kagato:d大QQ 02/08 22:56
→ honestonly:哭哭!! orz 02/08 23:07