Logic question ~

作者Akali (くっくっくっ......)

看板Multi-lingua

標題Logic question ~

時間Mon Apr 10 02:47:18 2006

What is the difference betwwen "If" and " If and only if"? Though the latter often appears in my calculus textbook, I never understand its real meaning. Help me ba ~~~~ My buddies ~~~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.230.3.61

推 mgbit:If and only if 若且唯若,表示前後互為充要條件 04/10 04:16

→ mgbit:吧~~~?! 04/10 04:17

推 bloedchen:樓上~~沒錯~~~ 04/10 09:47

→ bloedchen:if的話是這樣 A->B (B is true IF A is true). 04/10 09:49

推 lightkuo:@@ 這不是數學版這不是數學版這不是數學版XD 04/10 10:42

推 handkerchief:程設也有機會用到~~ 04/10 17:27

推 summitstudio:P 04/11 12:45

推 yu0101: P 04/11 18:53

推 Xkang:程式"語言"算不算多國語言的範圍阿...社長(感覺好像老闆)^^ 04/13 10:26

推 Akali:算呀我們現在語言學在上 Language Processing: Humans and 04/13 22:44

推 Akali:Computer 04/13 22:45