2012年10月28日
Analysis by Its History_exercise 1.5
摘要： Problem proposed by Armenia/Australia for the 35th international mathematical olympiad (held in Hong Kong, July 12–19, 1994). $ABC$ is an isoscelestri... 阅读全文
posted @ 2012-10-28 21:58 叶卢庆 阅读(224) 评论(0) 推荐(0)
Analysis by Its History_exercise 1.5
摘要： Problem proposed by Armenia/Australia for the 35th international mathematical olympiad (held in Hong Kong, July 12–19, 1994). $ABC$ is an isoscelestri... 阅读全文
posted @ 2012-10-28 21:58 叶卢庆 阅读(122) 评论(0) 推荐(0)
Analysis by Its History_exercise 1.4
摘要： (L.Euler 1770,Vollst.Anleitung zur Algebra ,St.Petersburg,OperaOmnia,vol.I).Consider an equation of degree four with symmetric coefficients,e.g., \b... 阅读全文
posted @ 2012-10-28 13:48 叶卢庆 阅读(108) 评论(0) 推荐(0)
Analysis by Its History_exercise 1.4
摘要： (L.Euler 1770,Vollst.Anleitung zur Algebra ,St.Petersburg,OperaOmnia,vol.I).Consider an equation of degree four with symmetric coefficients,e.g., \b... 阅读全文
posted @ 2012-10-28 13:48 叶卢庆 阅读(109) 评论(0) 推荐(0)
Analysis by Its History_exercise 1.3
摘要： Solve: \begin{equation} \label{eq:27.21.23} x^4+Bx^2+Cx+D=(x^2+ux+\alpha)(x^2-ux+\beta) \end{equation} So \begin{equation} \label{eq:27.21... 阅读全文
posted @ 2012-10-28 02:38 叶卢庆 阅读(140) 评论(0) 推荐(0)
Analysis by Its History_exercise 1.3
摘要： Solve: \begin{equation} \label{eq:27.21.23} x^4+Bx^2+Cx+D=(x^2+ux+\alpha)(x^2-ux+\beta) \end{equation} So \begin{equation} \label{eq:27.21... 阅读全文
posted @ 2012-10-28 02:38 叶卢庆 阅读(101) 评论(0) 推荐(0)