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수학동아 - 폴리매스
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[수학 정보] (나 보려고 쓰는)제곱근-루트
집돌이 페렐만 2020.01.22 22:10 조회 1138
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

제곱근을 쉽게 구하는 방법과 근삿값 구하는 법을 제가 나중에 보려고 올립니다.

휠릭시스 님과 21세기 오일러 님의 방법이라고 합니다.

1.  https://blog.naver.com/keewon2008/221777978540

를 참고하기

2. \sqrt{a}의 근삿값을 구하는 방법입니다. 먼저 그냥 숫자 1개를 찍습니다. ( 이숫자를 x1이라 합시다.) 그리고 그보다 더 정확한 값(이거는 x2라 합시다.) 은 다음공식에 따라 나옵니다. x2=\frac{1}{2}(x1+\frac{a}{x1}) 그렇게 나온값을 x1에 대입하는 것을 반복하면 됩니다.

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