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Edexcel A2 C4 Mathematics June 2015 - Official Thread

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Reply 3600

swagprincess

Original post by ahb123

I've emailed edexcel as integrating 3^x is not explained in the textbook so they shouldn't really ask a question on it!

omgg exactly! had a massive go at my teacher for no teaching us that but its not even on the specification! wtf

Reply 3601

Pin1234

For 8 d when subbing the values in I said 3^0= 3 instead of 1. Everything else in the integration was right and if I put it equals 1 I would have got the right answer. (I used the integral = 3^(2x)/(2ln3) ). How many marks would I lose for this? would it be possible to still get 100 ums?

Reply 3602

Legendboy123

Stats: 74 Ums (already done)

Raw marks:
C1: 65-68
C2: 70-72
M1: 50-60
C3: 55-62
C4: 61-66

Maaan, getting that A is gonna be close :/

Reply 3603

joey12340

Original post by swagprincess

omgg exactly! had a massive go at my teacher for no teaching us that but its not even on the specification! wtf

It's in the formual book (as shown below) and then u just use chain rule.

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1434479663808.jpg34.9KB

Reply 3604

TheGreyPhysicist

Original post by jackw220697

C1: 87 ums
C2: 83 ums
C3:62/75
C4: 52/75
D1: 65/75
S1: 74 ums
Anyone have any idea what this would be? thanks

http://umstools.sourceforge.net/demo/www/index.php?p=calculator&target=gce

Reply 3605

RThornton

Original post by swagprincess

omgg exactly! had a massive go at my teacher for no teaching us that but its not even on the specification! wtf

It is on the spec, you could integrate it by substitution or by parts, very do-able

Reply 3606

MattEconomics

Hi anyone who will respond

I think I have achieved 67 in C3 and 69 in C4 (both 2015).Is this likely to be an A*? (I need A* in maths for my offer)

also how many marks will I lose - on 7c I got Sin2t= 2ln(3/2) but me being daft forgot my calculator was in degrees and ended up with 27.something years???

Thanks!

Reply 3607

AlexObertan

Ahhh guys i had a migraine and really messed up this paper, does anyone know what UMS 27/75 will roughly be?
PLEASE HELP, really stresseddddddddddddddddd

Reply 3608

kooldude_dr

http://www93.zippyshare.com/v/sxvc4j9n/file.html

Reply 3609

saycheese:)

Original post by AlexObertan

Ahhh guys i had a migraine and really messed up this paper, does anyone know what UMS 27/75 will roughly be?
PLEASE HELP, really stresseddddddddddddddddd

if the boundary is in your favour, might pull off 40%. what do you need for maths anyway?

Reply 3610

Bowenabc

Would 67 in C3 and 65 in C4 scrape me an A*?

Reply 3611

raaj_mahal999

Hi guys, I think I did ok but made a really silly mistake on the last qu, I forgot to put the pi in front of the integral when finding the volume; apart from this I got everything in that qu correct, how many marks do you think I'd lose?
Also if I got 66/75 in c3 and around 70 to 72 in c4 is that enough for an A*?

Reply 3612

AlexObertan

Original post by saycheese:)

if the boundary is in your favour, might pull off 40%. what do you need for maths anyway?

Thanks! Need a B for maths, which after today looks unlikely :frown:

Reply 3613

mar28

Original post by kooldude_dr

http://www93.zippyshare.com/v/sxvc4j9n/file.html

Does anyone know how many marks would you need for pass?...

Reply 3614

saycheese:)

Original post by AlexObertan

Thanks! Need a B for maths, which after today looks unlikely :frown:

you might still get it depending on what you got for the rest though

Reply 3615

Egg1

Original post by rohan1811

your mums ass

shut up you weasely c unt

Reply 3616

Eeeeeeee

Why do I seem to be the only one who didn't get many answers and felt this paper was worse than the c3 one? I needed an A for uni but it looks like I'll be getting a B or a a C

Reply 3617

domcandrews

After taking 10 mins to understand the "Math error", Arsey had to put a little note to himself in the mark scheme saying "READ THE QUESTION", what a legend