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2011
Tue
1
Nov

# GCE O Level Oct/Nov 2011 A-Maths 4038 Paper 2 Suggested Answers & Solutions

(27)
Tuition given in the topic of Miss Loi the Tutor from the tuition centre desk of at 3:43 pm (Singapore time)

The day began with an innocent attempt at a prophetic tweet.

Only for it to be shot down soon after.

And so in a bright sunny binary day of 1/11/11, Captain Loi and her crew of sexy air stewardesses took off from The Temple to fly Jφss Sticks Airways Flight JS296 among the clouds once more – looking down at a million faces that seemed to bask in the (resigned) relief of the afternoon sun …

… following which the latch was pulled and the package released …

Click the button (if you haven’t yet done so) and grab it here!

• 1.1: Changed all the “Factor Theorem” to “Factor Formula” in Q10 which Miss Loi had written mistakenly in her haste 😛

For those who might be feeling a bit down after this year’s “more-challenging-than-usual” A-Maths papers, be comforted to know that the evil bell curve should be working in your favour (instead of against you) this time.

Hope you can take heart from the following Singlish-ridden quote which Miss Loi has always said to downcast students in times of need (while patting their backs simultaneously) …

If everyone says difficult and you say die then it’s ok.
But if everyone says easy and you say die then you REALLY DIEEEEEE!

Let the burning of Math books begin! But please don’t accidentally burn your books from other subjects 😛

Good Luck for the Rest of Your Papers!!!

Meanwhile last-minute air-drops cum tips for other O Level subjects are still continuing on the Jφss Sticks Facebook wall!

### Revision Exercise

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

1. Kenny  commented in tuition class

2011
Nov
1
Tue
5:07pm

1

The a maths paper 2 is ok... can get full mark if i am not wrong, seeing that there is only a tangent graph, which kill a lot

2. NeedHelp commented in tuition class

2011
Nov
1
Tue
6:55pm

2

Hi i would like to ask about the solution to 11 part 3 if it is possible to show that the line is a tangent to the circle by equating equations of both and obtaining a quadratic equation and hence prove that D = 0 ?

3. Lala commented in tuition class

2011
Nov
1
Tue
10:55pm

3

Would it be safe for me to assume that they will minus at most 3 marks for the differentiation Qn for the one with the lawn, if the value of r happen to be wrong?
Because my dP/dr is correct and my d2P/dr2 is also correct.... >< should have at least one mark each right?

• 2011
Nov
2
Wed
11:46am

3.1

@Lala: For Q6(iii), assuming that your mistake is only limited obtaining and substituting the wrong value for r, you should get be able to get at least 2 marks since the bulk of the 5 marks should go toward the derivation of dP/dr (and acknowledging P has a stationary value when dP/dr =0) plus your second derivative test - which your workings have to reflect clearly.

4. BOB commented in tuition class

2011
Nov
3
Thu
11:10pm

4

Hey Ms Loi, i know its virtually impossible to predict the moderation of O level papers. But i hope u can use ur awesome prediction skills and past experience to help me in something. Do u think that the A1 for this Amath paper (paper 1 + paper 2 combined) this year would be around at most 70% judging by the difficulty?? Please reply. I need some closure over this matter 🙁

• 2011
Nov
4
Fri
10:21pm

4.1

@BOB: While as you rightly pointed out that it's virtually impossible to predict, Miss Loi can say with a certain amount of certainty that any moderation being done would almost always be pulling the base A1 mark of 75 upwards (towards 80) instead of downwards (towards 70).

Hopefully this will bring some form of closure to you *gives a squeezy hug*

### 19 Reactions

1. Miss Loi tweeted

2011
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7:46am

5

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

2. Miss Loi tweeted

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8:07am

6

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

3. Miss Loi tweeted

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8:18am
4. taeclara tweeted

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8:24am

8

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

5. Clarice tweeted

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8:25am

9

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

6. 2011
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1
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8:25am

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RT @MissLoi: @hahahaannpeng Tally them here: http://t.co/bp5ihXIL 😀

7. Ong Aaron tweeted

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8:28am

11

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

8. Sixian. tweeted

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8:32am

12

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

9. whimsical tweeted

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8:33am

13

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

10. Sean Lim tweeted

2011
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8:37am

14

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

11. Jingyuan tweeted

2011
Nov
1
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8:59am

15

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

12. 2011
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9:10am

16

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

13. Kaleh :) tweeted

2011
Nov
1
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10:37am

17

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

14. Sixian. tweeted

2011
Nov
1
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11:35am

18

@LizhuYOOOOOONA RT @MissLoi: O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/iRXaxNLf #amath #olevel

15. J tweeted

2011
Nov
1
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12:01pm

19

@LizhuYOOOOOONA RT @MissLoi: O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/iRXaxNLf #amath #olevel

16. 2011
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12:03pm

20

O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

17. Miss Loi tweeted

2011
Nov
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12:41pm

21

The O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/BT0jrY0C #amath #olevel

18. Tania Chang tweeted

2011
Nov
1
Tue
12:57pm

22

@chickennuhget RT @MissLoi: The O Level 2011 Amaths Paper 2 solutions air-dropped: http://t.co/PzdF22mc #amath #olevel

19. lepakingking tweeted

2011
Nov
1
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2:09pm