I calculated the perimeter of triangle instead of the sector! Haven't read the question properly... How many marks would I lost?
i did this as well, im guessing probably one mark as sector is just r x theta
and for 8, i did c right to the point of evaluating x which i got wrong, then continued to use that answer for d and e, will those be marks carried forward?
I think the prove that Sn = whatever could throw quite a few people off
I said on a couple of threads to get all over the proof as it hadn't been asked for a while... It is the only proof you need to learn on C2 so to not bother learning it properly is laziness.
On the integration question, instead of taking away the area of the trapezium, I did curve take away line and integrated that, then sub in values of x, how many marks will I get for this?
So pissed off about the integration question. I got the area of the rectangle that needed to me subtracted as (7*2) rather than (7*1), so I got 7 less than the actual answer... even though I got the coordinates right in the first part. Stupid error. How many marks would I lose for that?
If you work out the value of r wrong, do you continue to lose marks in the other questions for using the wrong value of r? Nice paper though, thanks for the mark scheme!
Q3. d) Circles question: I found perimeter of the triangle PTQ instead of the perimter of sector PTQ. I wrote 5 + 5 + 8 = 18. (Didn't bother reading question correctly which was stupid of me)
How many marks lost on this? It was out of 3
Q.8) C) Finding x: I wrote down x = cuberoot of 120/4pi but then I put it in my calculator incorrectly. I used the square root option with a 3 infront of it, instead of using the real option located on the calculator and got x = 9.2 right next to it as I converted it into decimals and wrote it underneath the real answer. (Very silly calculator mistake)
This question was out of 5
Q.8 D) I subbed in cuberoot 120/4pi into the equation but then again as my part c) I expanded it incorrectly with the my calculator as I totally forgot the cuberoot option and instead used the normal square root option with a 3 infront of it on my calculator giving me the wrong answer. (Very silly calculator mistake)
This question was out of 2
The only major mistakes I made were these stupid calculator mistakes by not knowing the correct cube root option...
I said on a couple of threads to get all over the proof as it hadn't been asked for a while... It is the only proof you need to learn on C2 so to not bother learning it properly is laziness.
For 6 (b) are each of the 5 marks for each of the 5 x values? How many marks will i get if i only got 3 of the x values?