The Edexcel C1 (16/05/12 - AM) Revision Thread

I'm doing it first time on Wednesday

Good luck everyone!

Btw, there was this question which I struggled with:

Given that $y=2^x$ find expressions in terms of y for:

(a) (i) $y=2^{x+2}$
(ii) $y=2^{3-x}$

It's from a solomon paper

LOL, so I see you averaged about 68/69 marks on the papers...

I'm anxious, I don't know whether it is sufficient if I have done all the past papers, averaging 73 marks on them.. I guess I should do a couple of Solomon papers just to be sure...

Ahh I did that paper yesterday, you have to remember your indices rules with it.

When you have indices and you multiply you add the powers so you can see that the sqaured is being multiplied
I suck at explaining :l lemme try again

We know that if we have 2^3*(2^3) we get 2^6
cos we added 3 and 3
If we apply that here, you get (2^x)*2^2
When you sub y back in you get 4y

^ yup I explained that pretty badly :l

for the second one, when it's being minused it's division

If you still don't understand ask again and I'll see if I can make it more clear.


EDIT: I'm going to go take a shower so If you do need more help I'll explain it then.

woah wait swear the paper is out of 75?

Yes. But people are meant to get quite high aren't they? I see so many people with B's retake... Because their teachers told them it wasnt good enough.

Also I guess that the exam result will obviously be lower than the scores you got on past papers.

How much out of 75 is needed for:

(a) an A
(b) 100 UMS?

Thanks

Ahh...I think I get it Thanks! I will pos rep you when I have some left

For the second question, this is what I did:

$y=\dfrac{2^3}{2^x}$

$y=\dfrac{8}{2^x}$

So it equals 8/y ?

Yes. But people are meant to get quite high aren't they? I see so many people with B's retake... Because their teachers told them it wasnt good enough.

Also I guess that the exam result will obviously be lower than the scores you got on past papers.

@0range

So 100 seems to be a realistic target according to teachers?

Or something that you are able to achieve..?

Well I mean I'm hopefully gonna be doing Maths @ Uni so 100 is defin a realistic target, and it's not just that it's cause apparently C3 & C4 are like twice as hard so the scores on that will be lower then the grades you get for C1. At the end it's not really about what you get in an individual unit, it's about what you have overall Imagine if someone had 410/ 600 overall, which is a C and they scored 70 in C1, If they had that @ 80 they would've gotten a B overall. So I think teachers are just trying to make sure the student gets the highest they can achieve.

Well I'm off to do some more solomans...

Wouldn't boundaries be lower for those units?

I got an A in January by just doing Edexcel papers not solomon paper, but i got a really low A

Well I mean I'm hopefully gonna be doing Maths @ Uni so 100 is defin a realistic target, and it's not just that it's cause apparently C3 & C4 are like twice as hard so the scores on that will be lower then the grades you get for C1. At the end it's not really about what you get in an individual unit, it's about what you have overall Imagine if someone had 410/ 600 overall, which is a C and they scored 70 in C1, If they had that @ 80 they would've gotten a B overall. So I think teachers are just trying to make sure the student gets the highest they can achieve.

Well I'm off to do some more solomans...

I wanna do Maths at Uni too so i'll guess we'll be in the same boat next year
(well unless you're going for the oxbridge/durham/warrick unis)

I am in year 11 ... Did my GCSE in year 10 so the school asked us to do C1 in year 11. Seems straightforward.

I must ask, are Solomon's a must for that high A?