→ suhorng :f'gh + fg'h + fgh' 10/19 17:37
→ suhorng :別背奇怪的口訣呀.... 10/19 17:37
→ sean456 :口訣一樣可以用 (FG)H微分是 (FG)'H+(FG)H' 10/19 17:59
→ sean456 :再展開一次 F'GH+FG'H+FGH' 10/19 18:01
→ sean456 :可以一值推廣到n項函數相乘 10/19 18:02
→ tp62u04 :\謝謝~~ 10/19 20:29