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Old 23rd October 2013, 05:58 PM   #1 (permalink)
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Maths Paper 2 ANSWERS - 'O' level 2013

Hello

How was paper 2 today? To me it was way more difficult than paper 1.

Share answers too (:

Edit:
Found on twitter, not mine.


I checked already, mine mostly same. Graph idk.
The rest all same as except for the radian question where I gave in decimals instead of fraction.
And I forgot simplify, and I f***ing drew a tree diagram cause Idk what's a probability diagram. 1 Mark could determine whether I get a A1 or A2, or B3. asdfghjkl

Btw if any teacher or anyone wants the pdf version of this year's emaths paper 2, can pm me.
I scanned just now, and photoshopped away my annotations (:

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Old 23rd October 2013, 06:05 PM   #2 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Geez...no more A2 for me..

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Old 23rd October 2013, 06:16 PM   #3 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by ReclusivezXc View Post
Hello

How was paper 2 today? To me it was way more difficult than paper 1.

Share answers too (:

The polygon though is hard, 7aii my ans p = (840-180n)/(4-n)

Then the gradient for graph -22 something?

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Old 23rd October 2013, 06:17 PM   #4 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Quite manageable. I can't get A2 anymore because I lost around 10-13 marks for this paper.

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Old 23rd October 2013, 06:20 PM   #5 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by ccaian View Post
The polygon though is hard, 7aii my ans p = (840-180n)/(4-n)

Then the gradient for graph -22 something?
It should be around -24. I used A-Maths method to get the exact answer
My polygon answer is p = (180n-1080)/n (which is wrong haha!)

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Old 23rd October 2013, 06:22 PM   #6 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Bell curve will be so high.

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Old 23rd October 2013, 06:24 PM   #7 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by Mewipaws View Post
It should be around -24. I used A-Maths method to get the exact answer
My polygon answer is p = (180n-1080)/n (which is wrong haha!)
My math B4-B3 standard without curve so don't take my answer for it I hope faster come out the answer!! Might be my first time doing well for a math paper.

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Old 23rd October 2013, 06:29 PM   #8 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Gradient the theoretical answer is -24 but I think they accept +/- 0.5 of that value

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Old 23rd October 2013, 06:31 PM   #9 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by greenayyy View Post
Gradient the theoretical answer is -24 but I think they accept +/- 0.5 of that value
Not fair leh how do you draw a perfect tangent? Espcially when range so high -20-80 cfm of by a few numbers. Tangent will see saw abit to left or abit to right, no way can draw perfect de.

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Old 23rd October 2013, 06:39 PM   #10 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by ccaian View Post
Not fair leh how do you draw a perfect tangent? Espcially when range so high -20-80 cfm of by a few numbers. Tangent will see saw abit to left or abit to right, no way can draw perfect de.
If you take amaths, then you would know that you can differentiate the equation with respect to 't' to find the gradient at the point (:

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Old 23rd October 2013, 06:39 PM   #11 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

I didn't draw a perfect one,got -23.7...

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Old 23rd October 2013, 06:47 PM   #12 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Okay means I just suck..

But the rest quite okay cept vector onli.

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Old 23rd October 2013, 06:51 PM   #13 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Anybody get answers for transformation of vectors??

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Old 23rd October 2013, 06:54 PM   #14 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by InAmberClad View Post
Anybody get answers for transformation of vectors??
I got (9, -2). But surely I can foresee this answer as wrong.

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Old 23rd October 2013, 06:56 PM   #15 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

I got (-3,6)

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Old 23rd October 2013, 06:57 PM   #16 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by Flushed View Post
Bell curve will be so high.
Don't think so. Last year twitter everybody spam super easy. This year the sentiments are average or manageable.

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Old 23rd October 2013, 07:23 PM   #17 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

I hope A2 bell curve for emath is >75 and <85

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Old 23rd October 2013, 07:25 PM   #18 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

Originally Posted by greenayyy View Post
I didn't draw a perfect one,got -23.7...
If you get -23.7, you should be fine. Anywhere between 2.3 to 2.5, you are safe.

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Old 23rd October 2013, 07:57 PM   #19 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

How much ur think the passing work will be

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Old 23rd October 2013, 08:10 PM   #20 (permalink)
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Re: Maths Paper 2 - 'O' level 2013

for the polygon question I wrote p= 180(n-2)- 480 over n-4

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