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[수학 정보] lim x->0 sinx/x =1의 간단한 증명(기하학적 증명?)
리프 2019.12.10 03:14 조회 1311
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

보통 이걸 증명할 때 로피탈의 정리를 사용하거나 범위를 잡은 후 squeeze theorem을 사용하는데 저는 이러한 방법을 사용하지 않고 엄청 간단하게 증명했습니다. (이미 있는 풀이일수도 있지만 제가 직접 생각해낸 풀이입니다.)

 

+지금 아이패드라서 사진으로 업로드하는데 시간 되면 컴퓨터로 수식 입력한걸로 바꿀게요

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  •  
    리프 Lv.7 2019.12.10 03:15

    (사실 원의 넓이 다르게 증명하려다가 우연히 얻은 결과입니다 ㅋㅋ)

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  •  
    21세기오일러 Lv.11 2019.12.11 03:46

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    \frac{sin x}{x}=sin입니다. 바로 x가 약분이 되었기 때문ㅋㅋ

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