Comments on: Sergeant Loi’s Mid-Year Boot Camp 2008 – Defeat Partial Fractions In Three Devastating Moves

By: fix credit rating

fix credit rating — Wed, 14 Oct 2009 06:14:28 +0000

fix credit rating...

This is a great blog. I have to put a bookmark on it and come back again!...

By: Someone

Someone — Sat, 03 May 2008 02:36:16 +0000

Actually, using the comparing coefficients method is pretty useful too; less mistakes. Haha. And the cover-up rule is merely an application of subbing in, as in "To find A, B and C, sub in suitable values for x that makes certain components disappear or your life easier". Heehee. =)

By: ignorantsoup

ignorantsoup — Thu, 01 May 2008 03:06:31 +0000

lol..no la..programming C language lo..so 玉女C经.. I only got 武林秘籍 for such thing..math one gone liao. Haha.. Strange that the cover up rule wasn't taught. It made things so much easier and lessens the amount of variables we got to use. I would definitely recommend students learn it (on their own..dun sabo Sergeant Loi if you fail your exams because of a lack of understanding of the cover up rule)..

By: Sergeant Loi

Sergeant Loi — Wed, 30 Apr 2008 16:29:05 +0000

OMG: Yes the 三大招式 (Three Devastating Moves) has been '传授-ed' to all Sec Three disciples since 2007! Sergeant Soupie: What's this dodgy "玉女C经" you're imparting to your godsis?! Got A/B/C-size isit???! Anyway, sort of expected the Cover-Up Rule to be brought up somewhere in the comments. But since it is not being taught at all to current O Level students (maybe the powers-that-be simply hate shortcuts), Sergeant Loi has decided not to include it here to prevent any confusion. For those who are interested in the Cover-Up Rule, check out the workings described in this link - strange that there's no Wikipedia article on this. It's quick and it's fast and it really works! BUT note that

it can only be used on linear factors
in the case of repeated linear factors, it can only be used on the one with the highest power.
it CANNOT be used on quadratic factors!

* While most O Level questions can be solved using the Cover-Up Rule, karma will come and haunt many students who're over-reliant on it when the above conditions appear later in more complex partial fractions in A-Level Maths! Always have your basics to fall back on! Bry: Care to share your 绝世绝招? Or were you referring to the Cover-Up Rule too?

By: Bry

Bry — Wed, 30 Apr 2008 09:58:31 +0000

actually for parital fractions can just use 1 method to solve all 3 types of qn.

By: ignorantsoup

ignorantsoup — Wed, 30 Apr 2008 05:48:14 +0000

Partial fractions? I just did it again whilst doing Laplace transforms. Haha. Cover up rule saves up so much problems.. Somehow it reminded me that a few days ago I 传授 "玉女C经" to my godsis..lol..but its not math one..

By: OMG

OMG — Wed, 30 Apr 2008 03:38:34 +0000

OMG!!!.... Secondary students are learning all these stuffs now? I only learned it during my poly days. life getting tougher... Hahaha

By: Sergeant Loi

Sergeant Loi — Wed, 30 Apr 2008 01:56:47 +0000

These days they need to master more 招式 before they are fit enough to practise the H1/H2 武功 in their A-Levels! White hair is a sign of 走火入魔了!

By: |c3^sNoW

|c3^sNoW — Tue, 29 Apr 2008 23:45:31 +0000

OMG! nitemare from A levels! i had a hard time understanding it last time! y kids these days so poor thing one! no wonder all having white hair earlier n earlier