Arsey's Edexcel C4 S14 Model Answers

Reply 40

Mutleybm1996

19

53/75

Needed an A too

Posted from TSR Mobile

Reply 41

Basit2010

9

For 7b) After working out the volume under curve C would it have been correct or incorrect to work out the volume under line 1 and subtract that? (within the correct limits) . Would you have gotten the same answer? I did this but made an arthritic error so my answer for pi was a tad off...

Reply 42

jerryc96

Arsey on 7b i don't see where the 62pi^2 came from, is it just a scribe error?

Reply 43

andrew2209

11

I won't get full marks on Q7b, so it depends on how many method marks I get. Also not 100% sure I can remember my answer to 2b.

C4 Jan 2009 was 59 for an A.

Reply 44

R2D2.

5

Wow... I have a slight chance of getting just over 60 if I mark harshly. This is amazing. I just need to ace M2 to have a peace of mind. I made so many stupid mistakes though. Quite disappointed

Reply 45

mynameisntbobk

18

Don't even remember what I did so I have no idea how I've done

Reply 46

Mackers345

50/75 I reckon, for the rate of change i ended up with 2 values of 64pi and 80pi, but didnt know what to do with them, would you say that is 4 marks because 80pi/64pi = 5/4? Needed to do a little better!!

Reply 47

sonyeric33

1

Original post by Basit2010

For 7b) After working out the volume under curve C would it have been correct or incorrect to work out the volume under line 1 and subtract that? (within the correct limits) . Would you have gotten the same answer? I did this but made an arthritic error so my answer for pi was a tad off...

I did that and got 6(pi)^2 + 92/9 (pi) which I same correct answer so yh. he made a mistake in his answer xD

Reply 48

BrielleWhisper

for q6iii I got the right answer (I think) but then I carried on and ended up with y =arcsin(....) would they just ignore any subsequent working or would I lose marks?

Reply 49

dandroff

2

Original post by StoneSour0135

59 - a
52 - b
45 - c

im defo screwed now

Reply 50

R2D2.

5

Original post by andrew2209

I won't get full marks on Q7b, so it depends on how many method marks I get. Also not 100% sure I can remember my answer to 2b.

C4 Jan 2009 was 59 for an A.

Same, I assumed I got 6/15 on that question. If I get more method marks, I can get over 61 which would be absolutely brilliant

Reply 51

SpitShine

On Question 7, part B, I got as far as replacing the x boundaries with the theta equivalents and got the integral to 48(cos)^2, how many marks would i get for this?

Reply 52

wrestlingfan55

For 3c, I wrote "It's an overstatement because the curve bends inwards." Would I get the mark?

Reply 53

acciolucy

9

I thought I did really badly but looking at this I reckon I got 65 or 66, thinking I got around 69 in C3, really want to know what the grade boundaries are, oh so close!