Turn on thread page Beta
 You are Here: Home >< Maths

# Edexcel C3,C4 June 2013 Thread watch

1. Anyone up for some friendly competition to get full ums in both c3 and c4
2. (Original post by Revisionbug)
Anyone up for some friendly competition to get full ums in both c3 and c4
Bring it on!!

Posted from TSR Mobile
3. (Original post by Lamalam)
Is c3 solomon paper worth doing? Coz i am afraid i dont have much time to finish them all @@

Posted from TSR Mobile
Do like a few of them
4. now M2 and M3 are over, solid C3 til thursday
5. Could someone help me with 7(b) on Solomon paper K.

Spoiler:
Show
What I did was this:

and

and

so

The answer in the mark scheme is

I was just wondering whether these two answers are equivalent, and if not, then where have I gone wrong. Thanks.
6. (Original post by brittanna)
Could someone help me with 7(b) on Solomon paper K.

Spoiler:
Show
What I did was this:

and

and

so

The answer in the mark scheme is

I was just wondering whether these two answers are equivalent, and if not, then where have I gone wrong. Thanks.
I'm pretty sure they're not equivalent.

How did you get and ?
7. is the c3 and c4 exam in the morning or afternoon?
8. (Original post by Anjna)
is the c3 and c4 exam in the morning or afternoon?
Morning I believe.

Posted from TSR Mobile
9. Hey guys wondering if anyone could help me.

For the C3 Jan 08 paper Q)1) I used the method of equating coefficients instead of long division, and I got the first part right which is (2x^2-1).

My questions is how do you get the second part the (dx+e) bit.

Do I do (2x^2-1)(dx+e)=2x^4-3x^2+x+1. Then equate coefficients?

Any guidance, tips or help is appreciated!

Wait...I think I get it, do you do (dx+e)(1)=2x^4-3x^2+x+1.
Thus d =1.
But how is e=0... I though you would have done e=1?
10. (Original post by Anjna)
is the c3 and c4 exam in the morning or afternoon?
Both Exams are in the morning.
11. I really don't understand what you mean by equating the coefficients, but I always do long division. Once you've done the long division your remainder should be x . Because your remainder is x, you write it on top as (dx+e) So your d=1 and e=0 as there is no e. So your overall equation would be (2x^2 - 1) + x all over (x^2 - 1). Where a=2 b=0 c=-1 d=1 and e=0. Hope this helps.
12. (Original post by justinawe)
I'm pretty sure they're not equivalent.

How did you get and ?

I got in the same way, but using the equation with y instead of x. It doesn't look like the two answer are equivalent, so I just want to know where I went wrong.
13. (Original post by brittanna)

I got in the same way, but using the equation with y instead of x. It doesn't look like the two answer are equivalent, so I just want to know where I went wrong.
Brittanna thanks so much for the Tips on how to use your the Calculator to check back my answer. Surprsingly it's not even about the Calculator but how you think about Maths - verifying whether your logic is rigorous enough.

Just did C3 Jan 2013, surprisingly the Calculator stopped me from making horrendously horrible errors. I think I was a bit had a bit of Anxiety whilst I was doing it; but definitely great I did it today: Felt like an exam.

If anyone sees a question they don't get 100% remember to just Keep on Going.

It sounds silly but what I do for Chemistry and Physics, is when I'm stuck I flip to an Easy Question which is worth like 10 Marks and do that in 3-5 minutes and then go back again. It's what I just did on C3, and it definitely worked.

From doing this it is very easy to maintain momentum.

How to Solve it: A New Aspect of Mathematical Method - George Polya
http://www.math.utah.edu/~pa/math/polya.html
14. (Original post by Better)
Brittanna thanks so much for the Tips on how to use your the Calculator to check back my answer. Surprsingly it's not even about the Calculator but how you think about Maths - verifying whether your logic is rigorous enough.

Just did C3 Jan 2013, surprisingly the Calculator stopped me from making horrendously horrible errors. I think I was a bit had a bit of Anxiety whilst I was doing it; but definitely great I did it today: Felt like an exam.

If anyone sees a question they don't get 100% remember to just Keep on Going.

It sounds silly but what I do for Chemistry and Physics, is when I'm stuck I flip to an Easy Question which is worth like 10 Marks and do that in 3-5 minutes and then go back again. It's what I just did on C3, and it definitely worked.

From doing this it is very easy to maintain momentum.
That's kind of what I do in physics. Although for me it's more when my hand starts aching, i'll go and do some of the calculations (which are also usually easier) .

But yeah, although it isn't good to become too dependant on calculators, they can be a really big help as well.
15. (Original post by brittanna)
That's kind of what I do in physics. Although for me it's more when my hand starts aching, i'll go and do some of the calculations (which are also usually easier) .

But yeah, although it isn't good to become too dependant on calculators, they can be a really big help as well.
I'm glad I'm not the only one then.

I may just start off with the Essay Style Questions on Wednesday, before I do anything else!

But back to work, thanks again - time for me to do Chem 5 Jan 13, then Phys 5 Jan 13.....then argh chem 4 work after that al night...
16. Has anyone got that black thick A2 core for edexcel textbook, if so question 5a on the sample exam paper I'm stuck (C3)
17. (Original post by brittanna)

I got in the same way, but using the equation with y instead of x. It doesn't look like the two answer are equivalent, so I just want to know where I went wrong.
Actually, after subbing in values, I think they may actually be equivalent. But I'm not sure how to justify it.

I'm not sure if you can just square root both sides like you did though, you need to account for negative roots as well.
18. hey guys, I am quite confused about the edexcel c3 june 2006 q5a, and here is how I worl the question, am I correct?

i am confused about the cancelling of cos^2 (2K), why can it be eliminated?
my teacher told me that
if x^2 = 2x , I cannot cross out anything but putting the 2x on the same side as x^2 and carry on working.
why in the q5, the cos^2 (2k) can be eliminated? will this cause a loss of answer?
in what situation can a quantity be eliminated?

thank you soooo much!! please help!
19. Stuck on this, any help is appreciated! Stuck on the whole question!
20. (Original post by Delusional09)
Stuck on this, any help is appreciated! Stuck on the whole question!
For part (a), use the identity in the question and the fact that .

For part (b), try expressing the two fractions as a single fraction.

Reply
Submit reply
Turn on thread page Beta

### Related university courses

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: September 24, 2013
Today on TSR

### Exam Jam 2018

All day biology and life sciences revision thread

Poll
Useful resources

## Make your revision easier

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

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.