Comments on: GCE O Level Oct/Nov 2009 E-Maths 4016 Paper 1 & Paper 2 Suggested Answers & Solutions

By: Irma Syafiqah

Irma Syafiqah — Sat, 30 Oct 2010 00:30:28 +0000

RT @MissLoi: Retweet This Blog Post http://bit.ly/9GwPhu

By: Miss Loi

Miss Loi — Sun, 10 Oct 2010 15:47:27 +0000

Many thanks and your help in pointing out the typos in 1(a) and 16(a)(ii) is really appreciated (must've been those cramped fingers from countless ctrl-c-ctrl-v's). They have been amended accordingly. Regarding 19(b), while your argument sounds ok initially, Miss Loi feels it's pretty dangerous in this case to assume (based on a subjective interpretation of "a reasonable degree of accuracy") that a less accurate answer is a better answer, especially when no specific instruction is given to round it to the nearest 10. Furthermore, 280m and 30 degrees are what Sue estimated directly while the final answer is what needs to be calculated based on these estimated values. Just something that suddenly comes mind - what if she needed this to find a rope long enough to cross the river?

By: Aaron

Aaron — Sun, 10 Oct 2010 06:57:54 +0000

Oh ya, Miss Loi, regarding the 2009 E Math P1 Solutions:
http://www.exampaper.com.sg/blog/wp-content/uploads/gce-o-level-2009-emaths-4016-paper-1-solutions.pdf

1 (a) p = 5y(4x - 1)
There should'nt be a 'p'.

16 (a)(ii) Angle ABC should be 40 degrees; there was an error when the final answer was transferred because you wrote it as 26 degrees.

19 (b) "Sue is trying to estimate the distance ..." and "giving your answer to a reasonable degree of accuracy". Noting that the figures provided (280m and 30 degrees) could be estimates as provided by her, it is likely that the question is intended as an estimation question. In addition, part (a) of question 19 is testing the ability of candidates to estimate. So 162m (to 3 sf) may be a little to accurate since Sue only requires an estimated distance. Would 160m be a better answer?

By: hanis93

hanis93 — Mon, 01 Feb 2010 12:01:17 +0000

i have it.

By: Ahsan

Ahsan — Sat, 23 Jan 2010 21:02:58 +0000

hey plz nybody get me 0ct/nov 09 english O level cambridge paper.....

By: Little Miss Loi

Little Miss Loi — Fri, 13 Nov 2009 04:29:04 +0000

Hello KH, looking for these?

By: KH

KH — Wed, 11 Nov 2009 09:06:46 +0000

do you have the answers to combined science phys/chem??

By: JOYL

JOYL — Sat, 07 Nov 2009 16:21:42 +0000

Ok...understand...thanks...

Oh...anyone have the emaths paper 1? I downloaded the solutions but a lot of it I dun understand without the questions...

By: Miss Loi

Miss Loi — Fri, 06 Nov 2009 14:43:07 +0000

Sasori: For P2 Q1a, don't think there's any problem leaving it in 3/8 hrs, since we can even find a 1½ hour within the question itself! For P2 Q6d, as mentioned in an earlier reply to Jx, the key is to demonstrate that you’ve obtained the gradient (within a tolerable range) from calculating the gradient of your suitably-drawn tangent based on selected coordinates from your plot. As to what constitutes 'a tolerable range', some say ±10% of the actual answer. Even though your 2.8 is just a weeeeee bit outside this 10% of 3.26 (the exact gradient if you differentiate), Miss Loi still thinks you're fine as long as you've shown the ample workings within your graph.

By: Miss Loi

Miss Loi — Fri, 06 Nov 2009 14:25:16 +0000

JOYL, HXJ & Nash: Miss Loi hasn't come across any specific requirement from Cambridge that penalizes final answers that are in improper fractions (improper fractions are good for checking answers!) or un-rationalized surds (in AMaths), though she'll be extremely grateful if any one can point her to the relevant literature that says otherwise. However, it's important to note instead that surds in final answers should be reduced to their simplest forms i.e. 3√2 instead of √18. Perhaps that's the reason for the perception of trigo ratios of special angles (e.g. 1/√2) being 'excused' from rationalization?