수학동아 - 폴리매스

자유게시판

수학을 주제로 떠들어 보세요!

[잡담] 루트

mathwizard 2020.01.22 05:06 조회 780

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

루트 쉽게 구하는 법 좀 알려주세요... 쉬운 법 없으면 어려운 방법이라도..

이전글 으아아아아아아아

다음글 오늘은 무슨 날?

추천 0 목록보기

댓글 작성하기

K→C≡N Lv.11 2020.01.22 06:03

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

여기를 참고해 보세요!

저도 이걸로 쓰고 있어요

댓글 작성하기 좋아요0 댓글수1
- mathwizard Lv.7 2020.01.22 06:16
  
  감사합니다~
  
  좋아요0
황금 열쇠 Lv.7 2020.01.22 17:13

계산기를 써보는건...)퍽

댓글 작성하기 좋아요0 댓글수1
- mathwizard Lv.7 2020.01.22 18:37
  
  ㅋㅋ 그것도 좋은 생각이네요.
  
  좋아요0
21세기오일러 Lv.11 2020.01.22 20:37

A PHP Error was encountered

Severity: Warning

Message: mkdir(): Permission denied

Filename: libraries/Common.php

Line Number: 202

Backtrace:

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 202
Function: mkdir

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 236
Function: getLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
Line: 343
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 558
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: file_put_contents(/DATA/upload/polymath/latex/7e6756256806fffb5c5ca4975ce727c4.gif): failed to open stream: No such file or directory

Filename: libraries/Common.php

Line Number: 213

Backtrace:

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 213
Function: file_put_contents

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 236
Function: getLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
Line: 343
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 558
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: mkdir(): Permission denied

Filename: libraries/Common.php

Line Number: 202

Backtrace:

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 202
Function: mkdir

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 236
Function: getLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
Line: 343
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 558
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: file_put_contents(/DATA/upload/polymath/latex/40bb906822fc9a1458af26f7923a04d7.gif): failed to open stream: No such file or directory

Filename: libraries/Common.php

Line Number: 213

Backtrace:

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 213
Function: file_put_contents

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
Line: 236
Function: getLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
Line: 90
Function: parseLatexImg

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
Line: 343
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 558
Function: view

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

$\sqrt{a}$ 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.

댓글 작성하기 좋아요0 댓글수1
- mathwizard Lv.7 2020.01.22 20:58
  
  감사합니다~
  
  좋아요0
쪼민이 Lv.8 2020.01.23 05:04

으아ㅏㅏ 저도 루트 다음주에 배우는데ㅔㅔㅔ

어렵나요...

댓글 작성하기 좋아요0 댓글수1
- 21세기오일러 Lv.11 2020.01.23 05:44
  
  A PHP Error was encountered
  
  Severity: Warning
  
  Message: mkdir(): Permission denied
  
  Filename: libraries/Common.php
  
  Line Number: 202
  
  Backtrace:
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
  Line: 202
  Function: mkdir
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
  Line: 236
  Function: getLatexImg
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
  Line: 200
  Function: parseLatexImg
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
  Line: 343
  Function: view
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
  Line: 558
  Function: view
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
  Line: 315
  Function: require_once
  
  A PHP Error was encountered
  
  Severity: Warning
  
  Message: file_put_contents(/DATA/upload/polymath/latex/6ca6fd426706b50f7fc08b25a9ae1e18.gif): failed to open stream: No such file or directory
  
  Filename: libraries/Common.php
  
  Line Number: 213
  
  Backtrace:
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
  Line: 213
  Function: file_put_contents
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
  Line: 236
  Function: getLatexImg
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view_comment_list.php
  Line: 200
  Function: parseLatexImg
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/views/ver3/inc/view.php
  Line: 343
  Function: view
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
  Line: 558
  Function: view
  
  File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
  Line: 315
  Function: require_once
  
  많이 어렵지는 않아요. (그런데 $\sqrt[\frac{1}{2}]{3}$ 같은거 나오면 좀 어려워요.)
  
  좋아요0