Edexcel C1/C2 June 2014 Watch

diseasedneckbeard
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#561
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#561
(Original post by YGurung)
Hmmmm...I checked using 43 as well and it was greater than 0.5, but I don't know where I went wrong so I will just put my working out here and hopefully someone can tell me where I have gone wrong:

160-160(1-(7/8)n) < 0.5

I divided both sides by 160

1-(1-(7/8)n) <0.5/160

Opened up the brackets and the two give:

1-1+(7/8)n < 0.5/160

the ones cancelled each other out

(7/8)n<0.5/160

log both sides

n log(7/8) < log(0.5/160)

divide both sides by log(7/8)

then i got n < 43.19..

which is why got n= 43, if someone can point out my mistake please do so
I think you put your inequality sign the wrong way round. I had n > 43.19 so it had to be at least 44 (needed to be a whole number).
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YGurung
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#562
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#562
Ahhhhhh, I understand. So, how many marks do you think I will lose for that question?
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YGurung
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#563
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#563
Thank you, I understand. So, how many marks do you think I will lose for that question?
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IntenseTestTakin
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#564
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#564
I think for 7 part B I put down, 0, pi,-pi, hopefully I didn't lose all the marks from it.
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Oceann
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#565
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#565
http://www.thestudentroom.co.uk/show....php?t=2689406 unofficial markscheme
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randomm1
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#566
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#566
jan 2010 paper was 68 for 100 UMS.. but that was reaalllly hard
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Ilovemaths96
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#567
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#567
(Original post by Shady778)
/
What exactly do you mean? do you mean state the value of a and b individually?
yeah
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Sigalov
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#568
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#568
(Original post by *******1)
I think you put your inequality sign the wrong way round. I had n > 43.19 so it had to be at least 44 (needed to be a whole number).
Hmm. I suck at inequalities, but I'm pretty good at everything else. I got 43.19, and then tried both in the equation, so I knew that 44 was the correct answer and used that.

I wonder if my bad usage of inequalities will cost me any marks... Probably a method mark.
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vishalnankani
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#569
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#569
anyone know a rough idea of the grade boundaries
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JenniferMeghan
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#570
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#570
The find the value of n question, how many marks was it worth? I definitely screwed up on that but I *Think* that is it, I didn't have time to check my answers at the end because I spent forever on the earlier questions stupidly >_< So I don't know what other silly mistakes I may have made :/

I didn't think the paper was too hard, it was just really long and I had five minutes left when I got to the last question but luckily I'd done loads of revision on that type of question so I managed to do it in time but it wasn't really fair on others who would take longer to do it :/ A lot of people didn't finish it at my school.
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Lwhite29
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#571
(Original post by YGurung)
Hmmmm...I checked using 43 as well and it was greater than 0.5, but I don't know where I went wrong so I will just put my working out here and hopefully someone can tell me where I have gone wrong:

160-160(1-(7/8)n) < 0.5

I divided both sides by 160

1-(1-(7/8)n) <0.5/160

Opened up the brackets and the two give:

1-1+(7/8)n < 0.5/160

the ones cancelled each other out

(7/8)n<0.5/160

log both sides

n log(7/8) < log(0.5/160)

divide both sides by log(7/8)

then i got n < 43.19..

which is why got n= 43, if someone can point out my mistake please do so
Log(7/8) is negative so n>43.19 which is 44
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liass
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#572
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#572
Spent the entire exam throwing up, had to leave the room several times to be sick so couldnt focus on it at all!
Really frustrating considering how hard I have been revising for this C2 exam

Hopefully havent gotten too low of an A, was originally aiming for 100UMS but, well, that seems pretty impossible now. Hopefully C1 mark will bring my overall mark up

But overall, found it pretty hard, or is that just me?
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Angushan
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#573
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#573
no one cares
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Priya55192
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#574
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#574
(Original post by liass)
Spent the entire exam throwing up, had to leave the room several times to be sick so couldnt focus on it at all!
Really frustrating considering how hard I have been revising for this C2 exam

Hopefully havent gotten too low of an A, was originally aiming for 100UMS but, well, that seems pretty impossible now. Hopefully C1 mark will bring my overall mark up

But overall, found it pretty hard, or is that just me?
Aww damn, that's awful I can't even imagine! I was perfectly fine during the exam and I thought it was pretty damn hard. I've realised I made quite a few silly mistakes, oops. Let's hope for low grade boundaries I guess!
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misssbs18
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#575
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#575
After doing all the other past papers, this paper involved more application style questions,which was okay apart from q10 for me as I'm a second year. I'm sure the grade boundaries will be lower as most of the first years at my college found it hard
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misssbs18
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#576
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#576
(Original post by randomm1)
jan 2010 paper was 68 for 100 UMS.. but that was reaalllly hard
This paper was harder than jan 2010 due to the "applying" style of question
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syconiss
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#577
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#577
(Original post by misssbs18)
This paper was harder than jan 2010 due to the "applying" style of question
I do hope your right, went terrible for me everything logs went wrong, plus mistakes all over the shop. It was 54/75 for an A in jan 2010. With those numbers or lower a good grade for me would seem feasible.
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jgarnham
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#578
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#578
For question 2b on the paper where you had to fully factorise that equation I got (2x+1)(x-2)(x-2) but it seems some people got (2x-1)(x-2)(x-2), any ideas which is correct?
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Flame18
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#579
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#579
I don't think that the grade boundary will be low. I thought it was a standard paper. Except for question 10.a) and b) I thought everything else was easy. Although I will be really happy if the grade boundary is low.
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SpartanN7
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#580
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#580
(Original post by randlemcmurphy)
Was your 'a' value 2/3?
Dammit... I just realised, whatever I put there I put over 24... I think I could of simplified it too, so I may have gotten the equivalent of that, I'm not sure, either way, bye bye mark
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