Comments on: Houston, We Have A Math Problem

By: stranger

stranger — Thu, 18 Sep 2008 08:24:24 +0000

Till the day some robot takes over their marking tasks, teachers' lives remain heroic yet woeful.

By: Miss Loi

Miss Loi — Wed, 17 Sep 2008 16:25:53 +0000

Clarion: 一个英文字 / One word:

P R A C T I C E

*Looks at most recent comments*

Wah suddenly so many homework for Miss Loi to mark! *rubs eyes*

Long hours ahead ...

By: clarion-x

clarion-x — Tue, 16 Sep 2008 11:17:37 +0000

x.x

I am CMI in Coordinate Geometry the lor.
Any advice before any more tragic mistakes are made?

By: Miss Loi

Miss Loi — Mon, 15 Sep 2008 06:16:21 +0000

And now that ~~Chang-Er~~ Miss Loi has returned to earth after a delicious mooncake feast ...

Clarion: You're from LMBFHSS?!

Li-sa: To complete your profound poem: 昨晚的月餅很好吃喔!

7-inx: Since this is an AMaths question, are you taking AMaths?

By: Miss Loi

Miss Loi — Mon, 15 Sep 2008 06:05:33 +0000

Bravo Clarion and Li-sa for contributing two different approaches to this problem!

While both approaches are strategically similar in a sense that both seek to find the center coordinates of the circle via forming two simultaneous equations involving x and y (or h and k for that matter), Li-sa's has fewer steps (and a lower chance of careless mistakes) involved by working on the expression for radius r instead of working out the linear equations.

So a great example that textbook answers may not necessary be the greatest and quickest

P.S. Sketching out a quick diagram immediately upon reading the question can often help you visualize the whole thingy and open your eyes to many possibilities

By: 7inx

7inx — Sun, 14 Sep 2008 01:46:35 +0000

=.= not understand the question at all
going crazy T.T
malaysia education level really so low

By: Li-sa

Li-sa — Sat, 13 Sep 2008 13:39:10 +0000

诗词，只是应节罢了，没什么大不了。
Miss Loi当然不是嫦娥啊！那首《嫦娥》是作者抒情用的，好像人们说「搞什么鬼」不是说真的闹鬼一般。

By: clarion-x

clarion-x — Sat, 13 Sep 2008 12:16:11 +0000

And Miss Loi, may you not float off to the moon after enjoying mooncakes again!

By: clarion-x

clarion-x — Sat, 13 Sep 2008 12:15:28 +0000

But the thing is that we haven't even STARTED on differentiation!

By: Li-sa

Li-sa — Sat, 13 Sep 2008 10:32:27 +0000

啊，我忘了跟你说：
中秋节快乐！

《水调歌头》苏轼
丙辰中秋，欢饮达旦，大醉，作此篇，兼怀子由。

　　明月几时有，把酒问青天。不知天上宫阙，今夕是何年。我欲乘风归去，又恐琼楼玉宇，高处不胜寒。起舞弄清影，何似在人间。
　　转朱阁，低绮户，照无眠。不应有恨，何事长向别时圆。人有悲欢离合，月有阴晴圆缺，此事古难全。但愿人长久，千里共婵娟。

《嫦娥》李商隐
云母屏风烛影深，长河渐落晓星沉。
嫦娥应悔偷灵药，碧海青天夜夜心。