"에어리 (Airy) 함수와 미분방정식"의 두 판 사이의 차이
Pythagoras0 (토론 | 기여) |
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1번째 줄: | 1번째 줄: | ||
− | + | ==개요== | |
− | + | * <math>y'' - xy = 0</math> | |
− | + | <math>\mathrm{Ai}(x) = \frac{1}{\pi} \int_0^\infty \cos | |
− | + | \left(\tfrac13t^3 + xt\right)\, dt,</math> | |
− | + | <math>\mathrm{Bi}(x) = \frac{1}{\pi} \int_0^\infty \left | |
− | + | [\exp\left(-\tfrac13t^3 + xt\right) + \sin\left(\tfrac13t^3 | |
− | + | + xt\right)\,\right]dt.,</math> | |
http://www.wolframalpha.com/input/?i=Ai%28x%29 | http://www.wolframalpha.com/input/?i=Ai%28x%29 | ||
− | + | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||
+ | ==근사공식== | ||
+ | |||
+ | * [[안장점 근사]]<br><math>x>>0</math> 일 때,<br><math> | ||
− | + | \mathrm{Ai}(x) \sim \frac{e^{-\frac{2 x^{3/2}}{3}}}{2 \sqrt | |
− | + | {\pi } \sqrt[4]{x}}</math><br><math>x<<0</math> 일 | |
− | + | 때,<br><math>\mathrm{Ai}(x) \sim \frac{\sin \left(\frac{2 | |
− | + | |x|^{3/2}}{3}+\frac{\pi }{4}\right)}{\sqrt{\pi } \sqrt[4]{| | |
− | + | x|}}</math><br> | |
− | * [http://www.math.umn.edu/ | + | * [http://www.math.umn.edu/ |
− | + | %7Eymori/docs/teaching/fall08/airy.pdf Asymptotics of the | |
− | + | Airy Function]<br> | |
− | + | ||
− | + | ||
− | + | ||
+ | |||
+ | ==역사== | ||
+ | |||
+ | |||
* http://www.google.com/search?hl=en&tbs=tl:1&q= | * http://www.google.com/search?hl=en&tbs=tl:1&q= | ||
* [[수학사연표 (역사)|수학사연표]] | * [[수학사연표 (역사)|수학사연표]] | ||
− | + | ||
− | + | ||
− | + | ==메모== | |
− | + | ||
* Math Overflow http://mathoverflow.net/search?q= | * Math Overflow http://mathoverflow.net/search?q= | ||
− | + | ||
− | + | ||
− | + | ==관련된 항목들== | |
− | + | ||
− | + | ||
− | + | ==수학용어번역== | |
* 단어사전<br> | * 단어사전<br> | ||
69번째 줄: | 83번째 줄: | ||
** http://www.forvo.com/word/airy/#en | ** http://www.forvo.com/word/airy/#en | ||
** 아이어리? | ** 아이어리? | ||
− | * [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? |
− | ** http://mathnet.kaist.ac.kr/mathnet/math_list.php?mode=list&ftype=eng_term&fstr= | + | |
− | * [http://www.nktech.net/science/term/term_l.jsp? | + | 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://www.nktech.net/science/term/term_l.jsp? | ||
− | + | l_mode=cate&s_code_cd=MA 남·북한수학용어비교] | |
+ | * | ||
− | + | [http://kms.or.kr/home/kor/board/bulletin_list_subject.asp? | |
− | + | bulletinid=%7BD6048897-56F9-43D7-8BB6-50B362D1243A | |
− | * https://docs.google.com/file/d/0B8XXo8Tve1cxbl96STk2T3dpajg/edit | + | %7D&boardname=%BC%F6%C7%D0%BF%EB%BE%EE |
+ | |||
+ | %C5%E4%B7%D0%B9%E6&globalmenu=7&localmenu=4 대한수학회 수학 | ||
+ | |||
+ | 용어한글화 게시판] | ||
+ | |||
+ | |||
+ | |||
+ | |||
+ | |||
+ | ==매스매티카 파일 및 계산 리소스== | ||
+ | |||
+ | * | ||
+ | |||
+ | https://docs.google.com/file/d/0B8XXo8Tve1cxbl96STk2T3dpajg/ | ||
+ | |||
+ | edit | ||
* http://www.wolframalpha.com/input/?i= | * http://www.wolframalpha.com/input/?i= | ||
* http://functions.wolfram.com/ | * http://functions.wolfram.com/ | ||
− | * [http://dlmf.nist.gov/ NIST Digital Library of Mathematical Functions] | + | * [http://dlmf.nist.gov/ NIST Digital Library of |
− | * [http://people.math.sfu.ca/%7Ecbm/aands/toc.htm Abramowitz and Stegun Handbook of mathematical functions] | + | |
− | * [http://www.research.att.com/%7Enjas/sequences/index.html The On-Line Encyclopedia of Integer Sequences] | + | Mathematical Functions] |
− | * [http://numbers.computation.free.fr/Constants/constants.html Numbers, constants and computation] | + | * [http://people.math.sfu.ca/%7Ecbm/aands/toc.htm Abramowitz |
− | * [https://docs.google.com/open?id= | + | |
+ | and Stegun Handbook of mathematical functions] | ||
+ | * [http://www.research.att.com/%7Enjas/sequences/index.html | ||
+ | |||
+ | The On-Line Encyclopedia of Integer Sequences] | ||
+ | * | ||
+ | |||
+ | [http://numbers.computation.free.fr/Constants/constants.html | ||
+ | |||
+ | Numbers, constants and computation] | ||
+ | * [https://docs.google.com/open? | ||
+ | |||
+ | id=0B8XXo8Tve1cxMWI0NzNjYWUtNmIwZi00YzhkLTkzNzQtMDMwYmVmYmIx | ||
− | + | NmIw 매스매티카 파일 목록] | |
− | + | ||
− | + | ||
+ | |||
+ | ==사전 형태의 자료== | ||
* http://ko.wikipedia.org/wiki/ | * http://ko.wikipedia.org/wiki/ | ||
* http://en.wikipedia.org/wiki/Airy_equation | * http://en.wikipedia.org/wiki/Airy_equation | ||
* http://en.wikipedia.org/wiki/WKB_approximation | * http://en.wikipedia.org/wiki/WKB_approximation | ||
− | * [http://eom.springer.de/default.htm The Online Encyclopaedia of Mathematics] | + | * [http://eom.springer.de/default.htm The Online |
− | * [http://dlmf.nist.gov/ NIST Digital Library of Mathematical Functions] | + | |
− | * [http://eqworld.ipmnet.ru/ The World of Mathematical Equations] | + | Encyclopaedia of Mathematics] |
+ | * [http://dlmf.nist.gov/ NIST Digital Library of | ||
+ | |||
+ | Mathematical Functions] | ||
+ | * [http://eqworld.ipmnet.ru/ The World of Mathematical | ||
+ | |||
+ | Equations] | ||
− | + | ||
− | + | ||
− | + | ==리뷰논문, 에세이, 강의노트== | |
− | + | ||
− | + | ||
− | + | ||
− | + | ==관련논문== | |
* http://www.jstor.org/action/doBasicSearch?Query= | * http://www.jstor.org/action/doBasicSearch?Query= | ||
120번째 줄: | 174번째 줄: | ||
* http://dx.doi.org/ | * http://dx.doi.org/ | ||
− | + | ||
− | + | ||
− | + | ==관련도서== | |
* 도서내검색<br> | * 도서내검색<br> | ||
** http://books.google.com/books?q= | ** http://books.google.com/books?q= | ||
** http://book.daum.net/search/contentSearch.do?query= | ** http://book.daum.net/search/contentSearch.do?query= |
2012년 10월 21일 (일) 13:04 판
개요
- \(y'' - xy = 0\)
\(\mathrm{Ai}(x) = \frac{1}{\pi} \int_0^\infty \cos \left(\tfrac13t^3 + xt\right)\, dt,\)
\(\mathrm{Bi}(x) = \frac{1}{\pi} \int_0^\infty \left [\exp\left(-\tfrac13t^3 + xt\right) + \sin\left(\tfrac13t^3 + xt\right)\,\right]dt.,\)
http://www.wolframalpha.com/input/?i=Ai%28x%29
근사공식
- 안장점 근사
\(x>>0\) 일 때,
\( \mathrm{Ai}(x) \sim \frac{e^{-\frac{2 x^{3/2}}{3}}}{2 \sqrt {\pi } \sqrt[4]{x}}\)
\(x<<0\) 일
때,
\(\mathrm{Ai}(x) \sim \frac{\sin \left(\frac{2
|x|^{3/2}}{3}+\frac{\pi }{4}\right)}{\sqrt{\pi } \sqrt[4]{|
x|}}\)
%7Eymori/docs/teaching/fall08/airy.pdf Asymptotics of the
Airy Function]
역사
메모
- Math Overflow http://mathoverflow.net/search?q=
관련된 항목들
수학용어번역
- 단어사전
- 발음사전
- [http://mathnet.kaist.ac.kr/mathnet/math_list.php?
mode=list&ftype=&fstr= 대한수학회 수학 학술 용어집]
mode=list&ftype=eng_term&fstr=
l_mode=cate&s_code_cd=MA 남·북한수학용어비교]
[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 수학
용어한글화 게시판]
매스매티카 파일 및 계산 리소스
https://docs.google.com/file/d/0B8XXo8Tve1cxbl96STk2T3dpajg/
edit
- http://www.wolframalpha.com/input/?i=
- http://functions.wolfram.com/
- [http://dlmf.nist.gov/ NIST Digital Library of
Mathematical Functions]
- [http://people.math.sfu.ca/%7Ecbm/aands/toc.htm Abramowitz
and Stegun Handbook of mathematical functions]
The On-Line Encyclopedia of Integer Sequences]
[http://numbers.computation.free.fr/Constants/constants.html
Numbers, constants and computation]
id=0B8XXo8Tve1cxMWI0NzNjYWUtNmIwZi00YzhkLTkzNzQtMDMwYmVmYmIx
NmIw 매스매티카 파일 목록]
사전 형태의 자료
- http://ko.wikipedia.org/wiki/
- http://en.wikipedia.org/wiki/Airy_equation
- http://en.wikipedia.org/wiki/WKB_approximation
- [http://eom.springer.de/default.htm The Online
Encyclopaedia of Mathematics]
- [http://dlmf.nist.gov/ NIST Digital Library of
Mathematical Functions]
- [http://eqworld.ipmnet.ru/ The World of Mathematical
Equations]
리뷰논문, 에세이, 강의노트
관련논문