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Function: require_once

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[잡담] 증명 문제
mathwizard 2020.03.24 03:56 조회 846

증명 문제들은 '~가~함을 증명하라'하는 거잖아요, 그러면 어떻게 증명을 해야 되나요? 그 문제가 성립하는 예를 쓰면 되는거예요? 증명방법을 모르겠어요... 

  •  
    Abiria♡ Lv.8 2020.03.24 05:07

    1. 주어진 조건에서 시작해서 명제를 이어서 결국 원하는 명제로 잇는다.

    2. 원하는 명제가 틀렸다고 하면 모순이 생김을 보여준다.

    ...이 두가지 정도가 있습니다.

    댓글 작성하기 좋아요0 댓글수1
    •  
      mathwizard Lv.7 2020.03.25 20:06

      감사합니다!

      좋아요0
  •  
    아인수타인 Lv.12 2020.03.25 08:13

    만약 그 명제가 거짓임을 증명하려면, 성립하지 않는 예 하나만 들어도 충분합니다. 하지만 참임을 증명하려면, 그렇게 예시를 들면 안됩니다(왜냐하면 시도해보지 않은 것 중 반례가 있을 수 있으니). 증명하는 데는 귀류법, 수학적 귀납법, 대우법 등 여러 기법이 있습니다. 증명을 '어떻게' 하냐고 질문하면... 뭐 딱히 할 말이 없네요. 하지만 증명 기법을 물어본다면, 앞에서 말했던 방법이 대표적이긴 하지만 다른 여러 증명법도 많이 있습니다. 그건 스스로 찾아보세요^^

    댓글 작성하기 좋아요0 댓글수1
    •  
      mathwizard Lv.7 2020.03.25 20:06

      감사합니다!

      좋아요0
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