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# Edexcel IAL Core Mathematics - C12 - WMA01 - JUNE 2016

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1. (Original post by ToxicPhantom007)
the centre was (a,0)
so circles eq will be (x-a)^2+(y-0)^2=a^2 because a is the radius
and in the second part substitute x with 4 and y with -3 to get a
i got it like 3.125
Ditto

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2. (Original post by Najlac)
It was definitely not easy, but it wasn't too hard either. I know many people at my school found it difficult so I'm sure the grade boundaries will be similar to the January 2016 grade boundaries, if not, lower. I guess the difficulty of the paper depends on how many past papers you've done, some people who found the exam very easy have done literally all the papers since 2007 lol
I did papers since 2005 this year was the hardest C12 IMO

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I did papers since 2005 this year was the hardest C12 IMO

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Really? I found the June 2014 c12 paper a lot more challenging
4. Whew! I was skeptical of the divide by 2 in that first part.And I did +16 because I saw a similar question in Past Papers and just applied that logic here.
5. (Original post by jamessmith 2202)
till what i could remember..not in the same order though!
1. p=1.5, q=63
2. a. 14.556, b. 7.278 , cant remember
3. a. x< or equal to 4.5
b. x> 1.5 or x< -5 X< -5 and 1.5<X<4.5
4. arithmetic440066
5. centre(x-a)^2 + y2= a^2A= 25/8
6. angle sin 19.5 and -30
7. geometric0.817539
8. grapha- (8/5,4/5) b- (20/9, 10/9)
9. log Y^2 = 32/Xx= 0.5y=8
10. Q(x)a= -10b= 13
11. sectorarea = 0.654
12. some angle question pi/12 and 5pi/12
13. integration 11/64
The only answers I can remember right now are 1,2,3,6,8,11 which are the same as yours.
EDIT:I also got the same for 12.
6. Oh yeah,I got √n=√50
And for the segment question,How did you guys attempt it? I created 2 equations for the 2 out of 4 segments and used substitutions.
1. Hey can anybody go through the trig identities question, it was 1-2cos(theta-PI/5) = 0, PI<theta<PI then ii) was 4cos^2x + 7sinx-2=0 i think for 0<=x<=360
1. p=1.5, q=63
2. a. 14.556, b. 7.278 , 30.556
3. a. x< or equal to 4.5
b. x> 1.5 or x< -5 and 1.5<X<4.5
4.arithmetic series quest a)4 b)400 c)didnot solve
5 the surd question a) k=32 b) 5 sqrt 2 c) n=50
6. log question sim. eq. x=0.5 y=8
7.centre(x-a)^2 + y2= a^2A= 25/8 = 3.125
8. angle sin 19.5 and -30
9. geometric series n= 39
10. graph x coordinates A= 8/5 B=20/9 and in the transformed graph we had to multiply y values with 3/2
11. Q(x)a= -10 b= 13
12. sectorarea = 0.654
13. some angle question pi/12 and 5pi/12
13. integration 0.33 (i know this is not exact as asked in the question)
8. (Original post by Najlac)
Really? I found the June 2014 c12 paper a lot more challenging
This was the hardest C12 paper till date for sure. 😓
9. I wouldn't say it was the hardest.Personally I found it a bit challenging but still a little easier than june 2014
10. phymath tutor has said that he won't upload model answers of unofficial mrkschemes. ****
https://pbs.twimg.com/media/CjUAtIbUUAAEf2s.jpg
11. (Original post by ToxicPhantom007)
1. p=1.5, q=63
2. a. 14.556, b. 7.278 , 30.556
3. a. x< or equal to 4.5
b. x> 1.5 or x< -5 and 1.5<X<4.5
4.arithmetic series quest a)4 b)400 c)didnot solve
5 the surd question a) k=32 b) 5 sqrt 2 c) n=50
6. log question sim. eq. x=0.5 y=8
7.centre(x-a)^2 + y2= a^2A= 25/8 = 3.125
8. angle sin 19.5 and -30
9. geometric series n= 39
10. graph x coordinates A= 8/5 B=20/9 and in the transformed graph we had to multiply y values with 3/2
11. Q(x)a= -10 b= 13
12. sectorarea = 0.654
13. some angle question pi/12 and 5pi/12
13. integration 0.33 (i know this is not exact as asked in the question)
Do you remember what question 9 and 11 asked?

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12. (Original post by khassan)
Do you remember what question 9 and 11 asked?

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Find the least value of N and find Q(x) I think.
13. (Original post by OnTheHorizon)
Find the least value of N and find Q(x) I think.
Ohh..I got n as 66

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14. (Original post by OnTheHorizon)
Find the least value of N and find Q(x) I think.
Here is what I did

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Attached Images

15. (Original post by khassan)
Here is what I did

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It's wrong.The correct answer is 39.I ended up writing 1 number higher(40) So I lose 1 mark out of the total.You had to use logs.
EDIT:Wait You're referring to a different question.I'm talking about the other N where you had to use logs and stuff.As far this answer goes I think 66 is right.
16. (Original post by OnTheHorizon)
It's wrong.The correct answer is 39.I ended up writing 1 number higher(40) So I lose 1 mark out of the total.You had to use logs.
EDIT:Wait You're referring to a different question.I'm talking about the other N where you had to use logs and stuff.As far this answer goes I think 66 is right.
Wow bro u nearly gave me a heart attack

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17. (Original post by OnTheHorizon)
It's wrong.The correct answer is 39.I ended up writing 1 number higher(40) So I lose 1 mark out of the total.You had to use logs.
EDIT:Wait You're referring to a different question.I'm talking about the other N where you had to use logs and stuff.As far this answer goes I think 66 is right.
Do you remember the question?

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18. (Original post by khassan)
Wow bro u nearly gave me a heart attack

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Sorry,I don't remember the question exactly.
19. (Original post by OnTheHorizon)
Sorry,I don't remember the question exactly.
hey do u think my answers are correct ? ive mentioned them above

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