You are Here: Home >< Maths

# Edexcel C2 20th May 2015 *Official Thread* watch

1. (Original post by Nickkav)
You did 192-34, but an area is impossible to be negative so u should have done 192 + 34
It was 32* not 34 wasn't it?
http://www.thestudentroom.co.uk/show....php?t=3343941

over 320 users have already voted
3. Whos got bio tommorow?

Posted from TSR Mobile
4. (Original post by sssmerch)
Does anyone remember how many marks it was to prove that C was a minimum for the last question. If it was one mark, what would you get the mark for? Because instead of subbing in my R value I subbed in C (483) but it still came out positive and said it was therefore minimum. Would I still get the mark?
i think it was 2 marks, so one for differentiation again, and a second for proving its a minimum
5. (Original post by 1asdfghjkl1)
on part a of the last question i didnt realise that u had to do the circumference x the length of the cylinder (not diameter) and thats why i got 300/r instead of 300pi/r how many marks would that lose??
anyoneeeee??
6. (Original post by Nickkav)
You did 192-34, but an area is impossible to be negative so u should have done 192 + 34
You don.

(Original post by BBeyond)
so **** init rip
bro i'm so mad after that exam, how ****ing dirty it was. S1 better be ****ing nice or im legit done. Tbh I think i did the trig equations okay, hoping for dem method marks. I ****ed up on the factorising finding A and B question... i tilted at that
7. (Original post by HarryDESMOND)
should have taken btec asdan tbh
no m8 I do btec asdan lyk n im sik n tried of ppl sayin its easyer than a levels lyk u dnt get it man
8. (Original post by joe1545)
i think it was 2 marks, so one for differentiation again, and a second for proving its a minimum
Was only one mark!
9. (Original post by tayloryeah)
I did do it separately, I got 32 for the first value and 164 for the other
The second value was around 190 something not 164
10. (Original post by ALEVEL_STUDENT)
Q1was 16?

Posted from BEHIND YOU
11. (Original post by A*da*m)
It was 32* not 34 wasn't it?
no m8 it was 34
12. I made the silliest mistake of all.
Instead of diving 600pi/12pi ove cube root. I did sqaue root and got r as 5 which i was happy about. Aaarrrrgggghhhhhhhhh fml!!!

Posted from TSR Mobile
13. (Original post by joe1545)
i think it was 2 marks, so one for differentiation again, and a second for proving its a minimum
So how many marks do you think I would get because I technically did both but I'm scared they'll take off a mark
14. ROTATED, YOU'RE welcome, folks.

http://i.imgur.com/LLDWNmc.jpg

15. (Original post by anndz3007)
Q1: 1024-1280x+720x square
Q2: (x-2) square -(y+1) square= 20
Part b i got gradient =1/2, x-2y-14=0
Q3: A=-96,B=-48
Fractorise =3(x-4)(x+4)(2x+1)
Q4:40.9 perimeter and 96.7 area
Q5: r=8/9,a=18,n=28
Q6=32+194=226
Q7:y=1/3 or y=3/2
Q8i/9,4pi/9,7pi/9
Cosx=1+/- square root of (1+16k) devided by 8
X=0, x=136.8 or 138.6 something,x=221.4
Q9: 483
I think Q2b)x-2y+14
Also do you think I will lose a mark for not simplifying the factor?
16. That was easy you guys should have just taken btecs
not srs
That was so hard
17. (Original post by 1asdfghjkl1)
anyoneeeee??
Probably just one, providing you then differentiated the equation they gave nd got right answers for the differentiation, and minimum turning point
18. (Original post by TheAstrocist)
Was the area actually 226? That's what the majority of people got, but the smartest guy in our year disagrees

Posted from TSR Mobile
You are right his he is not
19. (Original post by LearningGeek)
Whos got bio tommorow?

Posted from TSR Mobile
Wooh!..

Posted from TSR Mobile
20. 192 +32 +32

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: May 15, 2017
Today on TSR

### Edexcel C3 Maths Unofficial Markscheme

Find out how you've done here

### Should predicted grades be ditched

Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE