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Name: Lee ChingCheong
Country: Hong Kong
Birthday: 9/16/1990
Gender: Male


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MSN: cheong999@msn.com
ICQ: 246809680


Member Since: 9/4/2005

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Sunday, December 27, 2009

其實在四天前,因對方 (我補習的) 的媽媽要求,我給他作了一份 mock paper.
http://www2.hkedcity.net/sch_files/a/yck/yck-021418/public_html/mockexamfor_form1.pdf

路過的某人可能會好奇第 4 條和第 5 條的 enumerate 是怎樣 gen 出來,把連結的 pdf 轉成 tex 便能夠看到 tex 檔 (基本上這是我的習慣,幾乎每一個你在這裏看到的 pdf 檔都有相應的 tex 檔已被上傳),你便找到寫法了。

要注意的是 preamble 必須加入
      \usepackage{multicol}
而呼喚這個環境時要用
     \begin{multicols}

     \end{multicols}


Saturday, December 26, 2009

hea 了成個星期,是時候收拾心情重拾課本了。

Combinatorics!


Friday, December 25, 2009

活人分屍


Thursday, December 24, 2009

I can proceed my study on analysis next semester in math 204 (course registration allowed),
getting a satisfatory marks in final exam of math 203 is quite due to sheer luck.

1939 Putnam
u = 1+\frac{x^{3}}{3!}+\frac{x^{6}}{6!}+\cdots ,\ v =\frac{ x}{1!}+\frac{x^{4}}{4!}+\frac{x^{7}}{7!}+\cdots ,\ w =\frac{x^{2}}{2!}+\frac{x^{5}}{5!}+\frac{x^{8}}{8!}+\cdots

が成り立つとき,
u^{3}+v^{3}+w^{3}-3uvw = 1 を証明せよ。


Monday, December 21, 2009

I was challenged by a F.7 student to prove this inequality, my classmate can try it, not hard

For any real x_i, y_i\ge 0,
\left(\sum_{i=1}^n


都忘了除了 gif 支緩透明底外,png 也支緩呢。
Sunday, December 20, 2009 裏的兩張圖也試着使用 png 的透明底,
效果不錯看!

印像中 IE 較低版品不能夠正確地顯示含透明底的 png 圖。



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