Year 12s: what will be the first way you research your future options? >>

Edexcel A2 C4 Mathematics June 2015 - Official Thread

Scroll to see replies

I only fully answered 3 questions, the rest i got part a but couldnt do b or c, or i couldnt find a so i couldnt do b even though i knew the method. And i totally agree with it being difficult to come to a correct answer, im pretty sure most of my answers were wrong so im hoping for method marks xD
The only one i didnt attempt was the vectors one. I did half of the dot formula for part c and thats it.

Method marks are my best friend. I'm realizing silly mistakes I've made >.< Like

Unparseable latex formula:

\int 3^2^x \dx = 3^2^x \ln(3) \times 6

I looked at the 3 and was multiplying by 2, so my brain did a dumb. RIP all answer marks to that question.

It sucks when questions require those pre-requisites. Coming from PSYA4 I didn't have much time to effectively revise C4.

Reply 2661

Maetras

Original post by pinkcrystal

Did anyone get coodirinates of (24/5 , 16/5) and (-24/5 , -16/5)

Yeah!

Reply 2662

Follett

Original post by pinkcrystal

Did anyone get coodirinates of (24/5 , 16/5) and (-24/5 , -16/5)

Yes I did

Posted from TSR Mobile

Reply 2663

Hectors

lol at my predicted A*
this exam was deep, I integrated the last question within the limits of 0 and Q, hence i got some stupidly wrong answer. Also did not notice the population was in thousands so i kept getting Sin being over 1. Just Fark off edexcel srsly

Reply 2664

cogito.

Original post by Humbers

Lmao you put 1 answer and it's wrong
The correct answer to 8 is 13pi/ln3

Sorry my bad, it's 13pi/ln3, can't remember the answers

Reply 2665

Bustamove

Original post by pinkcrystal

Did anyone get coodirinates of (24/5 , 16/5) and (-24/5 , -16/5)

I think I only wrote down (24/5 , 16/5) ... I don't think we had to find a second one? I may be wrong... I can't remember which question this is, but i remember getting those values.. well the positive ones anyway

Reply 2666

sansasstark

Original post by talkbiology

Lol same just glad I wasn't the only one.
I eventually concluded that there was a mistake in the paper and moved on, it's not exactly unheard of haha. Only a 3-marker though :smile:

What was the mistake??

Attachment not found

Original post by pinkcrystal

Did anyone get coodirinates of (24/5 , 16/5) and (-24/5 , -16/5)

Yes

Reply 2669

leroythelost

Original post by scales1996

Tbh just hoping for method marks, could barely finish much of the integration.... some nice questions though I'm hoping around 50 marks will be a B :smile:

Nah 50 def won't be a B this paper was too easy relative to others

Reply 2670

mrno1324

Original post by s.c.a1

wheres arsey's thread for c4???

****s' sake, give him some time.

Reply 2671

Igooo

Original post by sahlean

i got this too

Same

Posted from TSR Mobile

Reply 2672

GTA5

Original post by sansasstark

radians, i think. I did a past paper with a similar question where you lost a mark for using degrees.

I doubt it. 0.2 yrs for the animals to reach a population of "4000"?! It has to be in degrees so u get 27yrs. C'mon lets be realistic. Do u think humans can produce 4000 offspring in 73 days? (0.2 yrs)