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# GCE O Level Oct/Nov 2011 A-Maths 4038 Paper 1 Suggested Answers & Solutions

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On a dark rainy Halloween afternoon, a black-draped Jφss Sticks Airways Flight JS296 flew amongst the dark rain clouds, her crew stood in a sombre moment’s of silence to reflect on a prophecy that came true (but of course maybe not so true for others …)

… following which they pulled the latch and released the package to the waiting populace below …

Click the button and grab it here!

Now for Paper 2: Here’s a list of possible topics that may appear for tomorrow MORNING‘s Paper 2.

1. Matrices
2. Logarithms

• Change in base
• Exponential equations (with substitution method e.g. let y = ex)
3. Factor & Remainder Theorem
4. Partial Fractions

6. Circles
7. Plane Geometry
8. Trigonometry

9. Maxima & Minima problems – nature of stationary points etc.

One more maths paper to go before the burning of Math books begin!

ALL THE BEST & GANBATTE!

### Revision Exercise

To show that you have understood what Miss Loi just taught you from the centre, you must:

1. kii commented in tuition class

2011
Oct
31
Mon
8:38pm

1

I did better at amaths than at emaths LOL.

anyways, thanks for the solutions! i was afraid i'll fail my amaths actually.

ありがと！

2. Gordon commented in tuition class

2011
Oct
31
Mon
9:46pm

2

Hi, I am just curious how much do we need to score to get an A1. I got 72/80 for this paper because I was really really careless. Thanks!

3. Gordon commented in tuition class

2011
Oct
31
Mon
9:47pm

3

Hi, I am just curious to know how much do we need to score to get a confirmed A1. I got 72/80 for this paper because I was really careless. Thanks a lot!

• 2011
Nov
4
Fri
10:24pm
4. Luchia Kiryu commented in tuition class

2011
Oct
31
Mon
10:43pm
5. Luchia Kiryu commented in tuition class

2011
Oct
31
Mon
10:52pm

5

Cause for the last question, I got the first part correct . But the rest i got wrong :/ (Idiotic Mistake D:) - But the method is correct @@

Plus, a few of the questions also steps correct but final answer wrong Dx

• 2011
Nov
2
Wed
12:15pm

5.1

Yes Method Marks are not a myth ...

Here's a quote from the past:

Marks are of the following three types:

M Method mark, awarded for a valid method applied to the problem. Method marks are not lost for numerical errors, algebraic slips or errors in units. However, it is not usually sufficient for a candidate just to indicate an intention of using some method or just to quote a formula; the formula or idea must be applied to the specific problem in hand, e.g. by substituting the relevant quantities into the formula. Correct application of a formula without the formula being quoted obviously earns the M mark and in some cases an M mark can be implied from a correct answer.

A Accuracy mark, awarded for a correct answer or intermediate step correctly obtained. Accuracy marks cannot be given unless the associated method mark is earned (or implied).

B Accuracy mark for a correct result or statement independent of method marks.

More details and Miss Loi's elaboration (as applied to local context) here but in a nutshell,

• M leads to A (answer mark) and you cannot get A without M i.e. your workings leading up to the answer must be correct - no A mark(s) will be awarded should you happen to obtain your answer without workings or by by luck (usually in long multi-mark questions)
• B (the other kind of answer mark) is independent of M (usually in short 1-mark questions or, say, a 3-mark question requiring 3 specific answers)
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