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Edexcel A2 C4 Mathematics June 2015 - Official Thread

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Did anyone get like 105 for the length? And 30 something for the angle?

Original post by anndz3007

for the ln2 question, did anyone get 32(ln2 square)-32ln2+12 ??

Yeah~

(160(ln3)^2pi-27pi)/ln3 anyone please!!!! for the last q

Please cast a vote at
http://www.thestudentroom.co.uk/showthread.php?t=3407637

abbiecharlottee

Unofficial markscheme?

Original post by anndz3007

for the ln2 question, did anyone get 32(ln2 square)-32ln2+12 ??

YES!! but I was really unsure whether the ^2 could be brought down so I did 2 sets of working and answers.

Original post by DomRauba

(160(ln3)^2pi-27pi)/ln3 anyone please!!!! for the last q

Sorry,
13pi/ln(3)

So lucky i put P=4000 and found the answer tooweird, so i crossed out and put P=4 yayyyyy

Original post by Ripper Phoenix

used radians got 0.2 something sounds logical tho! 0.2 years thats like a few months perfect

I got 0.473

Graham Catterall

Dont think you'll be getting any quotes bruh

Original post by DomRauba

(160(ln3)^2pi-27pi)/ln3 anyone please!!!! for the last q

It is 13pi/ln3

Arsey we need you now more than ever

Original post by bwr19

Yes!

was it not 16?

7.something for the vector distance ?

Posted from TSR Mobile

Original post by ninetail9990

its 2. while mutiplying 4 and 4 cancel out

I got k=4

:smile:

I'm not sure what you mean by 4 and 4 cancelling out. I got y=2cos(theta) and dx/dtheta = 2cos(theta) so they mutliplied to give 4cos^2(theta) :smile:

:smile:

Original post by skywalker12

Did anyone get like 105 for the length? And 30 something for the angle?

yeah for the angle got a much lower number for the length, like 6 point something maybe

Original post by cfcdrog

I think it was x^2 +2x-5 all over x-3...anyone got that?

Yup. You had to combine the fraction and the x+5 or something or other.

What was p/q for the first answer

Original post by rory58824

Not a bad exam at all! Last question was a little tricky. For the question which asks for your answer in terms of ln2, did anyone get a quadratic in terms of ln2?

yes! what did you get?

Original post by Ripper Phoenix

i didnt even finish some parts! like 2 parts!

i even didn't have time to read the question.. the one of finiding t ...i didn't even knw the population was in 1000

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