Testing of Latexrender
Posted on 2008-07-09 • (1)
This question is taken from Mathematical Excalibur Volume 9 Number 2, with the real source coming from XVI Asian Pacific Mathematical Olympiad which took place on March 2004.
[......]
Some untold memory about IMO
Posted on 2008-06-12 • (0)
Last night I suddenly remembered something others told me, way back when the days I participated in International Mathematics Olympiad. At that time the leader told us Hong Kong participants about some dark truth happened in the past. One of them being that North Korean team has been discredited before. I completely forgot when it happened, but definitely more than 15 years ago.
[......]
1/x 新解
Posted on 2007-04-04 • (1)
本來的樣子相信不少人都會很清楚：
[Unparseable or potentially dangerous latex formula. Error 6 ]
不過，上圖不是 ，只是我分開兩段線段畫而已。(Continue reading…)
Learning gnuplot
Posted on 2007-01-15 • (0)
As a test to see how much my maths sense has deteriorated, I’ve fetched 2006 Putnam exam and had a look at the questions.
The first question is [......]
0/0 也是一個數？
Posted on 2007-01-06 • (0)
昨天看 MathForge 看到的，似乎已經是一個月前的「新聞」了。基本上，就是有個電腦系教授 James Anderson 說 0 除以 0 不再是無定義，將它定義為一個稱為 nullity 的數，就可以解決許多一般數學解決不了的問題。
說清楚一點，除了賦予 nullity 定義外，還有：
Calculate square root with pen and paper only (2)
Posted on 2007-01-01 • (0)
This is a continuation of previous article; here I’ll explain the reasoning behind the method. It’s basically related to the expansion of [......]
Calculate square root with pen and paper only (1)
Posted on 2006-12-26 • (0)
This page mentions quite an interesting way to calculate square root of any real number, which is elementary enough so that even senior primary studen[......]