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C3 June 2012 - Post Exam Thread - Solutions and Paper in the FIRST POST

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Reply 60

holahola

for question 3 how many marks would you get if you got up to tan3X= ...whatever the answer was

Reply 61

Souriretoujours

ah so relieved thinking I got about 70/75 :smile:

Reply 62

justneedhelp

Original post by Arsey

This thread will be locked at somepoint and then unlocked at midnight following the Core 3 examination. I will upload the paper and my solutions to this post. I will do my best to answer questions about the paper but please try to read the thread first so that I am not answering the same questions lots of times.Here are some links to previous D1 threads, they are worth a read and you will see what the common errors were...C3 Jan 2012 - http://www.thestudentroom.co.uk/show....php?t=1903204C3 June 2011 - http://www.thestudentroom.co.uk/show....php?t=1619039The second link has loads of past papers, mark schemes, model solutions etcGood luck.

Hey Arsey, could you please put up your grade boundary predictions in the first thread please :smile:

thanks!

Reply 63

knowledgecorruptz

Original post by Ahmed_Mans

I forgot to simplify in 7(b), I left is as 9/6(x^2)+54
Will I lost any marks for it?

Question does not ask for it in its simplest form. You will not lose any marks, I did the same thing.

Reply 64

JordanS94

Original post by Benjyxo

OMG, didnt see the x >0 for 3! but -pi/9!! still should be 100 ums :3

I realised that but I was like dafuq its negative... HOW!!!????? :lol:

Reply 65

kpmarshall

Cheers Arsey! Messed Q1 up - silly addition but just been through, and I think I have 66/75 give or take :biggrin:

I need a B for uni so hopefully C4 won't be too bad and I will get my B :biggrin:

Well done/good luck/better luck next time everyone! (please circle appropriate answer :P)

Reply 66

zoeaw

I thought it was quite hard- not enough time to check answers/write down what I got :P
Feeling slightly more confident that I haven't completely failed after looking at the markschem- maybe around 60/75 if I didn't make any additional stupid mistakes..?

Reply 67

HeyItsMike

Can't believe I think I managed to misread iteration question as x0 = 0 rather than x0 = 1 :angry:

Stupid loss of an easy 3 marks.

Reply 68

Plzdontkillme17

I count 48/75 , really upset past papers was getting around 67 , can anyone guess what 48 would be ??? Please say a C haha

Reply 69

tommyridges

For 6e) where you had to draw the exponential curves on the graph I didn't draw on the asymptotes because it didn't ask for them. Do you think I will lose marks for this?

And on 7b) is Arsey saying there is two answers? because I left mine like (1/6)cos^2(arctan(x/3)). Is that ok as a final answer?

Other than those things I'm a bit unsure about I reckon it all went pretty well :biggrin:

A* here we come!

Reply 70

Souriretoujours

Original post by Arsey

Thank you so much :smile:

Really appreciate it. What were your opinions on the paper?

Reply 71

Kenan and Kel

Original post by amoo94

i thought it was hideous, i definitely wont have done better than in january! i'm hoping the mark scheme will make me feel a little bit better!

If you get a lower mark in your resit, which mark counts?

Reply 72

icedragon

Original post by Arsey

Cheers Arsey. How many marks do you think I would lose for not solving 3a) properly? I did it right up to root(3)sin3x + 3cos3x = 0 but I couldn't figure out how to solve so I just stuck in random pi values until I got the right answer and wrote that down.

Reply 73

Arva

Original post by Arsey

Thank you SO much for always doing these Arsey - you're the best!
What do you think the boundaries will be like?

Reply 74

UWS

How many marks would I get for..

3a) only did the differentiation, couldn't find turning points
3b) My gradient was wrong but x and y values were right
7b) Only reached up to 1/6sec^2(2y)

Would appreciate it if someone could tell me, thanks :smile:

Reply 75

tangkykiet