이항급수와 이항정리

이 항목의 스프링노트 원문주소

• 이항급수와 이항정리

 

 

개요

\((1 + x)^\alpha = \sum_{k=0}^{\infty} {\alpha \choose k} x^k = 1 + \alpha x + \frac{\alpha(\alpha-1)}{2!} x^2 + \frac{\alpha(\alpha-1)(\alpha-2)}{3!} x^3 +\cdots\)

• 이항계수
  

\(\frac{1}{(1-z)^a}=\sum_{n=0}^{\infty}\frac{(a)_n}{n!}z^n=1+az+\frac{a(a+1)}{2!}z^2+\frac{a(a+1)(a+2)}{3!}z^3+\cdots = \,_1F_0(a;z)\)

• 여기서  \((a)_n=a(a+1)(a+2)...(a+n-1)\)
  

 

 

예

\(\sqrt{1+x}=\sum _{k=0}^{\infty } \binom{\frac{1}{2}}{k} x^k=1+\frac{x}{2}-\frac{x^2}{8}+\frac{x^3}{16}-\frac{5 x^4}{128}+\frac{7 x^5}{256}-\frac{21 x^6}{1024}+\frac{33 x^7}{2048}-\frac{429 x^8}{32768}+\frac{715 x^9}{65536}-\frac{2431 x^{10}}{262144}+\cdots\)

\(\frac{1}{\sqrt{1-4z}}=\sum_{n=0}^{\infty} {{2n}\choose {n}} z^n=1+2 z+6 z^2+20 z^3+70 z^4+252 z^5+924 z^6+3432 z^7+12870 z^8+48620 z^9+184756 z^{10}+\cdots\)

 

 

 

역사

• http://www.google.com/search?hl=en&tbs=tl:1&q=newton+binomia
• 수학사연표

 

 

 

 

 

 

매스매티카 파일 및 계산 리소스

• https://docs.google.com/leaf?id=0B8XXo8Tve1cxYzg0NjZhOWMtOGUxNC00YjdkLTgxMTQtN2ExM2Y2NmIzZmNl&sort=name&layout=list&num=50
• http://www.wolframalpha.com/input/?i=
• http://functions.wolfram.com/
• NIST Digital Library of Mathematical Functions
• The On-Line Encyclopedia of Integer Sequences
• Numbers, constants and computation

• 매스매티카 파일 목록

 

 

수학용어번역

• http://www.google.com/dictionary?langpair=en%7Cko&q=
• 대한수학회 수학 학술 용어집
  
  • http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=eng_term&fstr=
• 대한수학회 수학용어한글화 게시판

 

 

사전 형태의 자료

• http://ko.wikipedia.org/wiki/
• [1]http://en.wikipedia.org/wiki/binomial_theorem
• http://en.wikipedia.org/wiki/Binomial_series
• http://www.wolframalpha.com/input/?i=
• NIST Digital Library of Mathematical Functions
• The On-Line Encyclopedia of Integer Sequences
  
  • http://www.research.att.com/~njas/sequences/?q=

 

 

관련논문

• http://www.jstor.org/action/doBasicSearch?Query=
• http://dx.doi.org/

 

 

블로그

• 구글 블로그 검색
  
  • http://blogsearch.google.com/blogsearch?q=
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