"함수값의 계산"의 두 판 사이의 차이

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* [[정오각형]]<br><math>\cos\frac{2\pi}{5}=\frac{\sqrt5 -1}{4}</math><br>
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* [[삼각함수]]
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* [[정오각형]], [[황금비]]<br><math>\cos\frac{2\pi}{5}=\frac{\sqrt5 -1}{4}</math><br><math>z^4+z^3+z^2+z^1+1=0</math><br> 복소평면상에서 <math>z</math> 의 <math>x</math> 좌표는 <math>\frac{-1+\sqrt{5}}{4} , \frac{-1-\sqrt{5}}{4}</math> 로 주어짐.<br>
* [[황금비]]
 
* [[삼각함수]]<br>  <br>
 
 
* [[가우스와 정17각형의 작도]]
 
* [[가우스와 정17각형의 작도]]
  
 
<math>\cos \frac{2\pi}{17}= \frac{-1+\sqrt{17}+\sqrt{34-2\sqrt{17}}+  \sqrt{68+12\sqrt{17}-4{\sqrt{170+38\sqrt{17}}}} }{16}</math>
 
<math>\cos \frac{2\pi}{17}= \frac{-1+\sqrt{17}+\sqrt{34-2\sqrt{17}}+  \sqrt{68+12\sqrt{17}-4{\sqrt{170+38\sqrt{17}}}} }{16}</math>
  
* [[모듈라 군, j-invariant and the singular moduli]]<br>
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* <math>\cos {\frac{2\pi}{3}} = -\frac{1}{2}</math>
** [[타원 모듈라 j-함수 (elliptic modular function, j-invariant)|j-invariant]]
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* <math>\cos {\frac{2\pi}{5}} = \frac{-1+\sqrt{5}}{4}</math>
* [[정수에서의 리만제타함수의 값]]
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* <math>16\cos{2\pi\over17} = -1+\sqrt{17}+\sqrt{34-2\sqrt{17}}+ 2\sqrt{17+3\sqrt{17}-\sqrt{34-2\sqrt{17}}-2\sqrt{34+2\sqrt{17}}} </math><br>
* [[디리클레 베타함수]]
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* [[감마함수]]<br>
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* [[타원 모듈라 j-함수 (elliptic modular function, j-invariant)|j-invariant]]<br><math> j(\sqrt{-1})=1728</math><br><math>j(\frac {-1+\sqrt{-3}}{2})=0</math><br><math>j(\frac {-1+\sqrt{-43}} {2})=-884736744</math><br><math>j(\frac {-1+\sqrt{-67}} {2})=147197952744</math><br><math> j(\frac {-1+\sqrt{-163}} {2})=-262537412640768744</math><br>
** [[다이감마 함수(digamma function)|Digamma 함수]]
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* [[정수에서의 리만제타함수의 값]]<br><math>\zeta(2n) =(-1)^{n+1}\frac{B_{2n}(2\pi)^{2n}}{2(2n)!}, n \ge 1</math>여기서 <math>B_{2n}</math>은 [[베르누이 수|베르누이수]]. <br><math>\zeta(-n)=-\frac{B_{n+1}}{n+1}, n \ge 1</math><br><math>\zeta(0)=-\frac{1}{2}</math><br>
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* [[디리클레 베타함수]]<br><math>\beta(0)= \frac{1}{2},  \beta(1)\;=\;\tan^{-1}(1)\;=\;\frac{\pi}{4},  \beta(3)\;=\;\frac{\pi^3}{32}, \beta(5)\;=\;\frac{5\pi^5}{1536}, \beta(7)\;=\;\frac{61\pi^7}{184320}</math><br>
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* [[감마함수]]<br><math>\Gamma\left(\frac{1}{2}\right)=\sqrt{\pi}</math><br>
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* [[다이감마 함수(digamma function)|Digamma 함수]]<br><math>\psi(1) = -\gamma\,\!</math><br><math>\psi\left(\frac{1}{2}\right) = -2\ln{2} - \gamma</math><br><math>\psi\left(\frac{1}{3}\right) = -\frac{\pi}{2\sqrt{3}} -\frac{3}{2}\ln{3} - \gamma</math><br><math>\psi\left(\frac{1}{4}\right) = -\frac{\pi}{2} - 3\ln{2} - \gamma</math><br><math>\psi\left(\frac{1}{6}\right) = -\frac{\pi}{2}\sqrt{3} -2\ln{2} -\frac{3}{2}\ln(3) - \gamma</math><br><math>\psi\left(\frac{1}{8}\right) = -\frac{\pi}{2} - 4\ln{2} - \frac{1}{\sqrt{2}} \left\{\pi + \ln(2 + \sqrt{2}) - \ln(2 - \sqrt{2})\right\} - \gamma</math><br>
 
* [[다이로그 함수(dilogarithm)|Dilogarithm]]
 
* [[다이로그 함수(dilogarithm)|Dilogarithm]]
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<math>\mbox{Li}_{2}(0)=0</math>
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<math>\mbox{Li}_{2}(1)=\frac{\pi^2}{6}</math>
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<math>\mbox{Li}_{2}(-1)=-\frac{\pi^2}{12}</math>
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<math>\mbox{Li}_{2}(\frac{1}{2})=\frac{\pi^2}{12}-\frac{1}{2}\log^2(2)</math>
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<math>\mbox{Li}_{2}(\frac{3-\sqrt{5}}{2})=\frac{\pi^2}{15}-\log^2(\frac{1+\sqrt{5}}{2})</math>
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<math>\mbox{Li}_{2}(\frac{-1+\sqrt{5}}{2})=\frac{\pi^2}{10}-\log^2(\frac{1+\sqrt{5}}{2})</math>
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<math>\mbox{Li}_{2}(\frac{1-\sqrt{5}}{2})=-\frac{\pi^2}{15}+\frac{1}{2}\log^2(\frac{1+\sqrt{5}}{2})</math>
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<math>\mbox{Li}_{2}(\frac{-1-\sqrt{5}}{2})=-\frac{\pi^2}{10}+\frac{1}{2}\log^2(\frac{1+\sqrt{5}}{2})</math>
  
 
 
 
 
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">간단한 소개</h5>
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<h5 style="margin: 0px; line-height: 3.428em; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">간단한 소개</h5>
  
 
 
 
 
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">재미있는 사실</h5>
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<h5 style="margin: 0px; line-height: 3.428em; color: rgb(34, 61, 103); font-family: 'malgun gothic',dotum,gulim,sans-serif; font-size: 1.166em; background-position: 0px 100%;">재미있는 사실</h5>
  
 
 
 
 
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">역사</h5>
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* [[수학사연표 (역사)|수학사연표]]
 
* [[수학사연표 (역사)|수학사연표]]
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련된 다른 주제들</h5>
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* [http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=&fstr= 대한수학회 수학 학술 용어집]<br>
 
* [http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=&fstr= 대한수학회 수학 학술 용어집]<br>
 
** http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=eng_term&fstr=
 
** http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=eng_term&fstr=
* [http://kms.or.kr/home/kor/board/bulletin_list_subject.asp?bulletinid={D6048897-56F9-43D7-8BB6-50B362D1243A}&boardname=%BC%F6%C7%D0%BF%EB%BE%EE%C5%E4%B7%D0%B9%E6&globalmenu=7&localmenu=4 대한수학회 수학용어한글화 게시판]
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* [http://kms.or.kr/home/kor/board/bulletin_list_subject.asp?bulletinid=%7BD6048897-56F9-43D7-8BB6-50B362D1243A%7D&boardname=%BC%F6%C7%D0%BF%EB%BE%EE%C5%E4%B7%D0%B9%E6&globalmenu=7&localmenu=4 대한수학회 수학용어한글화 게시판]
  
 
 
 
 
  
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">사전 형태의 자료</h5>
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* http://ko.wikipedia.org/wiki/
 
* http://ko.wikipedia.org/wiki/
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* http://www.jstor.org/action/doBasicSearch?Query=
 
* http://www.jstor.org/action/doBasicSearch?Query=
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*  도서내검색<br>
 
*  도서내검색<br>
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*  네이버 뉴스 검색 (키워드 수정)<br>
 
*  네이버 뉴스 검색 (키워드 수정)<br>
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* 구글 블로그 검색 http://blogsearch.google.com/blogsearch?q=
 
* 구글 블로그 검색 http://blogsearch.google.com/blogsearch?q=
 
* [http://navercast.naver.com/science/list 네이버 오늘의과학]
 
* [http://navercast.naver.com/science/list 네이버 오늘의과학]

2009년 9월 29일 (화) 15:36 판

\(\cos \frac{2\pi}{17}= \frac{-1+\sqrt{17}+\sqrt{34-2\sqrt{17}}+ \sqrt{68+12\sqrt{17}-4{\sqrt{170+38\sqrt{17}}}} }{16}\)

  • \(\cos {\frac{2\pi}{3}} = -\frac{1}{2}\)
  • \(\cos {\frac{2\pi}{5}} = \frac{-1+\sqrt{5}}{4}\)
  • \(16\cos{2\pi\over17} = -1+\sqrt{17}+\sqrt{34-2\sqrt{17}}+ 2\sqrt{17+3\sqrt{17}-\sqrt{34-2\sqrt{17}}-2\sqrt{34+2\sqrt{17}}} \)
  • j-invariant
    \( j(\sqrt{-1})=1728\)
    \(j(\frac {-1+\sqrt{-3}}{2})=0\)
    \(j(\frac {-1+\sqrt{-43}} {2})=-884736744\)
    \(j(\frac {-1+\sqrt{-67}} {2})=147197952744\)
    \( j(\frac {-1+\sqrt{-163}} {2})=-262537412640768744\)
  • 정수에서의 리만제타함수의 값
    \(\zeta(2n) =(-1)^{n+1}\frac{B_{2n}(2\pi)^{2n}}{2(2n)!}, n \ge 1\)여기서 \(B_{2n}\)은 베르누이수
    \(\zeta(-n)=-\frac{B_{n+1}}{n+1}, n \ge 1\)
    \(\zeta(0)=-\frac{1}{2}\)
  • 디리클레 베타함수
    \(\beta(0)= \frac{1}{2}, \beta(1)\;=\;\tan^{-1}(1)\;=\;\frac{\pi}{4}, \beta(3)\;=\;\frac{\pi^3}{32}, \beta(5)\;=\;\frac{5\pi^5}{1536}, \beta(7)\;=\;\frac{61\pi^7}{184320}\)
  • 감마함수
    \(\Gamma\left(\frac{1}{2}\right)=\sqrt{\pi}\)
  • Digamma 함수
    \(\psi(1) = -\gamma\,\!\)
    \(\psi\left(\frac{1}{2}\right) = -2\ln{2} - \gamma\)
    \(\psi\left(\frac{1}{3}\right) = -\frac{\pi}{2\sqrt{3}} -\frac{3}{2}\ln{3} - \gamma\)
    \(\psi\left(\frac{1}{4}\right) = -\frac{\pi}{2} - 3\ln{2} - \gamma\)
    \(\psi\left(\frac{1}{6}\right) = -\frac{\pi}{2}\sqrt{3} -2\ln{2} -\frac{3}{2}\ln(3) - \gamma\)
    \(\psi\left(\frac{1}{8}\right) = -\frac{\pi}{2} - 4\ln{2} - \frac{1}{\sqrt{2}} \left\{\pi + \ln(2 + \sqrt{2}) - \ln(2 - \sqrt{2})\right\} - \gamma\)
  • Dilogarithm

\(\mbox{Li}_{2}(0)=0\)

\(\mbox{Li}_{2}(1)=\frac{\pi^2}{6}\)

\(\mbox{Li}_{2}(-1)=-\frac{\pi^2}{12}\)

\(\mbox{Li}_{2}(\frac{1}{2})=\frac{\pi^2}{12}-\frac{1}{2}\log^2(2)\)

\(\mbox{Li}_{2}(\frac{3-\sqrt{5}}{2})=\frac{\pi^2}{15}-\log^2(\frac{1+\sqrt{5}}{2})\)

\(\mbox{Li}_{2}(\frac{-1+\sqrt{5}}{2})=\frac{\pi^2}{10}-\log^2(\frac{1+\sqrt{5}}{2})\)

\(\mbox{Li}_{2}(\frac{1-\sqrt{5}}{2})=-\frac{\pi^2}{15}+\frac{1}{2}\log^2(\frac{1+\sqrt{5}}{2})\)

\(\mbox{Li}_{2}(\frac{-1-\sqrt{5}}{2})=-\frac{\pi^2}{10}+\frac{1}{2}\log^2(\frac{1+\sqrt{5}}{2})\)

 

 

간단한 소개

 

 

재미있는 사실

 

 

역사

 

 

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수학용어번역

 

사전 형태의 자료

 

 

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관련도서 및 추천도서

 

 

관련기사

 

 

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