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AQA A2 Mathematics MPC3 Core 3 - Friday 5th June 2015 [Exam Discussion Thread]

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Reply 1980

on question 8b I only put the four answers down and did not show any incorrect working out, does this mean i will loose marks?

Reply 1981

smilejensmile

So annoyed- I was going to come back to the transformations question and the one before it because they were so easy (my brain was getting all muddled and I didn't want to make a silly mistake on them so I left them to come back to), and then I forgot about them completely!! 6 marks down the drain. :angry:

Other than that I think I've gotten about 55-59 depending on how generous they are with method marks, and I'm desperately hoping it's enough for an A because I really really want an A* overall. :frown:

For the graph drawing on question 2, if I put the points where the curve crossed the x and y axis on the graph and got them right but didn't actually draw the graph, how many marks do you think I'll get? I also did a table of values underneath but didn't have time to draw the lines on. And for the sine graph, how many marks (if any) do you think I'll get if I got the curve wrong and the y coordinates of the end points wrong but the x coordinates correct? And for the very last question- if I solved the equation correctly and got the 2 original x values (-7.5 and 22.5 I think?) but didn't find the other x values, how many marks will I get? Thanks!

Reply 1982

algebraicgenius

Original post by 2014_GCSE

gah I put x>1 and x<-5

any marks?

I got it as well. According to the graph, it should be right. -5 <x <1 is not the right solution, I assume.

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Reply 1983

LordGaben

What u think full ums is gonna be? Since june 14 was 71 for full ums I'm thinking about 69? I think I got 68 so probably just missed the cap :/

Reply 1984

ubisoft

Original post by algebraicgenius

I got it as well. According to the graph, it should be right. -5 <x <1 is not the right solution, I assume.

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You assume wrong.

Reply 1985

Lucasium

Does either cosec/cot or cot/cosec equal sec? Because that's how I showed 8a

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Reply 1986

crouchii

Anyone want to hazard a guess at the grade boundaries? I looked at the past two years and I'm about high E/low D going on average UMS, but I obviously don't know specifically what I got yet.

Reply 1987

megz13

Please can someone post workings for q7??

Reply 1988

SilenceOrNoise

for the gg(x) didnt it ask for it in root?

Reply 1989

bigphil98

Why is everyone so salty about this exam, AQA are allowed to change things a little bit otherwise everyone would just be repeating what they've already done and using no initiative to work out something different. It wasn't hard, it was different, and if you fully understood the content you'd have been able to work it out.

Reply 1990

Keels25

Original post by megz13

Please can someone post workings for q7??

hope this helps!!

Reply 1991

Marcum

For 8 (a) I derived two equations then divided one of the equations by the other and got the correct answer. Is that a valid way to answer the question?

Reply 1992

bigphil98

Original post by Marcum

For 8 (a) I derived two equations then divided one of the equations by the other and got the correct answer. Is that a valid way to answer the question?

Yes that's how it was meant to be done

Reply 1993

Keels25

Original post by Marcum

For 8 (a) I derived two equations then divided one of the equations by the other and got the correct answer. Is that a valid way to answer the question?

That's exactly what I did, I have no idea

Reply 1994

JF2013

Has anyone got a copy of the paper? Or at least the questions?

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Reply 1995

jhpy1024

Original post by bigphil98

I don't see what was different about it, seemed like a completely standard paper to me?

Reply 1996

megz13

Thank you! That's great :smile:

I messed up because I didn't separate the fractions! What an idiot! Oh well, might still get a couple of marks for the beginning bit! I did the bounds correct, would I get a mark for that even if my integration is wrong?

Reply 1997

ubisoft

There's no "meant to be" in maths. Any valid method is correct.

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Reply 1998

bigphil98

Original post by jhpy1024

I don't see what was different about it, seemed like a completely standard paper to me?

Modulus question was a little different, the iterative methods was different, the identity question was different. There was stuff which has never been in papers before but not stuff that wasn't possible to work out