充分必要条件 - Wikiwand
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例子1:對於大於2的整數,奇數是成為質數的必要條件。
如果一個整數大於2且是質數,它必定是奇數。
· 例子2:年滿30歲是成為美國參議員的必要條件。
如果他是參議員,他必定年 ...
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充分必要条件
Introduction
必要條件
充分條件
必要條件及充分條件
舉例
参考文献
参见
外部鏈接
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延伸文章資訊
- 1充分條件與必要條件的關聯性-知識百科-三民輔考
當「若P則Q」與「若Q則P」同時成立,這時P將成為Q的充分必要條件(簡稱充要條件)。例如等邊三角形是等角三角形的充要條件。 (二)必要條件:. 又稱為必要而不充分的 ...
- 2充分条件和必要条件怎么区分? - 知乎
下面先举一个例子简单说明试题中的做法: ... 也可能表示充分必要条件,区别是这个条件是不是导致结论的唯一条件。比如“只有触犯了刑法才按照刑法进行处罚”,“触犯了 ...
- 3[H07] 必要及足夠條件
解釋「必要條件」和「充分條件」有時會用到「可能性」這個概念。但是,「可能性」這個概念是有歧義的。從以下的例子,我們可以看到「可能性」有不同的意思:.
- 4《歡樂邏輯養成班,超有料!》:你是我的必要條件、充分條件
當「若A則B」與「若B則A」同時成立時,A就是B的充分必要條件,B也是A的充分必要條件。舉例來說,「若未達到成年年齡者,則為未成年人」和「若為未成年人, ...
- 5有問有答 - 數學王子的家
充要條件:又是充分也是必要,即稱為充要條件。 【例子】 敘述:正三角形必是等腰三角形 【說明】 充分條件:正三角形 必要條件:等 ...