OCR (NOT MEI) Core 2 Exam - 22nd May 2014

Reply 40

p625ccc

Limits were 3 and 1

x=(y^2+6y+9)/4-4 or x=(y^2+6y-7)/4

The integrals were (y^3)/12+(6y^2)/8-7y/4

(edited 9 years ago)

Reply 41

ali_blue

11

Will I lose marks for putting 48pi-36rt3=88 point something?

And how how did you answer the logs question

Reply 42

BrokenS0ulz

3

Original post by Chickenj90

I found this paper quite hard and I don't normally find c2 a problem questions 8a and last one of 9 were my faults.
Anyone got an idea of the grade boundaries according to past papers and difficulty. Most of my school came out of the exam saying it was hard.

What do you guys think about the exam?

Reaction was mixed at my school. There's always people that say it was easy. Some people looked like they were crying, and I found it about average. I would think something like 60 would be an A?

Reply 43

arryson

Original post by Chickenj90

I found this paper quite hard and I don't normally find c2 a problem questions 8a and last one of 9 were my faults.
Anyone got an idea of the grade boundaries according to past papers and difficulty. Most of my school came out of the exam saying it was hard.

What do you guys think about the exam?

It wasn't easy. Think it will be still be around 59ish for an A...

Reply 44

ali_blue

11

Original post by mitchellshazia

Yeah this happened to me

I ended up using the other page because I worked out the whole thing and forgot to add the 4 from x+4, and had to do it again. Oops

Reply 45

The_Blade

OP

6

Original post by Ki Yung Na

Same - my calculator wouldn't give it exact and I couldn't be bothered to do it myself so I just wrote out the massive decimal. Probably lost a mark for that :/

to get exact value you to each calculation separately (sector + area triangle)

i did this is one go on calc :frown:

Reply 46

mitchellshazia

6

Original post by arryson

What did people get for their x = f(y) in the last question. And how did they get their lower limit? :s

I think I got x = 1/4y^2 + 3/2y - 7/4.

Reply 47

p625ccc

Original post by ali_blue

Will I lose marks for putting 48pi-36rt3=88 point something?

And how how did you answer the logs question

1 mark if you are unlucky. I remember the question asked for exact value .

Reply 48

peakneek

1

Grade boundaries imo would be 63/4ish for an A. The general feeling at my school was that it was simple

Reply 49

Miso77

2

I did everything in radians mode on my calculator and didn't have time to change it :frown:

((((((((

Reply 50

username1060297

21

Original post by The_Blade

to get exact value you to each calculation separately (sector + area triangle)

i did this is one go on calc :frown:

Really? I tried both ways and it was still a decimal for me - probably different calculators.

Reply 51

ecsefem

2

Went awfully in honesty

Reply 52

nectempus

1

For the integration f(y) question I rearranged it fine and did the method fine but I must have made a calculation error wrong somewhere because I ended up with 68/3 instead of 14/3

How many marks do you think I will drop?

Reply 53

arryson

Original post by peakneek

Grade boundaries imo would be 63/4ish for an A. The general feeling at my school was that it was simple

Jesus 63/72 ? XD

Reply 54

Chickenj90

1

Original post by BrokenS0ulz

Reaction was mixed at my school. There's always people that say it was easy. Some people looked like they were crying, and I found it about average. I would think something like 60 would be an A?

yeah I agree

Reply 55

DaveInit

Original post by p625ccc

A list of C2 answers that I memorised
1. Q1
a. 36.3
b. 9.822
c. 14.5

2. Q2
a. 2,5,8
b. 2420

3. Q3
a. 8pie
b. 48-36*3^1/2

4. Q4
a. 71.6 251.6 116.6 296.6
5. Q5
a. Log486/log144

6. Q6
a. X^12+8x^7+24x^32x^-3+16x^-8
b. 1/13+1+8-16-16/7

7. Q7
a. 100
b. 3
c. 3+5^1/2 3-5^1/2

8. Q8
a. N=28
b. R=-1/2 a=6

Wasn't 8.b R= 1/2 ?

Reply 56

Frymo1997

What do you think the grade boundaries will be?

Reply 57

Chickenj90

1

Original post by arryson

It wasn't easy. Think it will be still be around 59ish for an A...

Hope so

Reply 58

p625ccc

Original post by nectempus

For the integration f(y) question I rearranged it fine and did the method fine but I must have made a calculation error wrong somewhere because I ended up with 68/3 instead of 14/3

How many marks do you think I will drop?

I think 2-4 marks depending on whether you got the correct integrals