推 zptdaniel:x<a=b, x>a=b , x>a>b, x<a<b 123.194.99.216 10/27 16:01
→ zptdaniel:應該是這樣吧 123.194.99.216 10/27 16:02
→ zptdaniel:我會先寫出x!=a and a=b的f'(x) 123.194.99.216 10/27 16:02
→ zptdaniel:然後剩下的狀況就先列出f'(x)的式子 123.194.99.216 10/27 16:03
→ zptdaniel:再去判斷 123.194.99.216 10/27 16:03