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C2 unofficial answers

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Probably zero
Original post by richpanda
oops. Out of 4 marks how many do you think I could get for getting the correct answer for the wrong subject?
Original post by eftio.gea
Guys wasn't part a of Q9 = 1/3pi(x^2)????

because the sector area is 1/2r^2(theta)
which is 1/2(x^2)(2/3pi)

= 2/6pi(x^2)
= 1/3pi(x^2)
??


YUSSSS i was going to mention that... he didnt multiply by 1/2 i guess
Reply 42
Avatar for tom_lol
tom_lol
You sure about the values for the trapezium rule one? I got 41.5, if I remember correctly
Original post by eftio.gea
yes it was, i got b = (a-5)/9


yeah thats what i got :smile:
Original post by tom_lol
You sure about the values for the trapezium rule one? I got 41.5, if I remember correctly


i'm pretty sure you had to divide by 2, i got the same answer as theirs
1.201? I got 1.6 something and so did the majority of my mates
Original post by FakeDumbledore
Unlucky mate I've seen the official mark scheme and a few of these are wrong :/
Better luck next year in your resit...


I got 100UMS
Original post by richpanda
i got -2.19.

anyone get 9b+5 for a in terms of b?


it wanted b in terms of a
Original post by AstarAstarA
I got 100UMS


Oh really, didn't realize you can get your results now
If you put an answer that isn't in the range eg -14.5 do you lose a mark?
Original post by samgoulden99
Probably zero


might only get 90 ums then. Actually just checked with my teacher and he said 2 marks for showing manipulation of logs so could get 95.
Reply 51
Avatar for tom_lol
tom_lol
Original post by tom_lol
You sure about the values for the trapezium rule one? I got 41.5, if I remember correctly

Wish I could go back and see the question, I can remember being 100% sure that I had gotten the correct answer.
Lol I failed
Original post by eftio.gea
Guys wasn't part a of Q9 = 1/3pi(x^2)????

because the sector area is 1/2r^2(theta)
which is 1/2(x^2)(2/3pi)

= 2/6pi(x^2)
= 1/3pi(x^2)
??


Pretty sure I got that
Original post by eftio.gea
Guys wasn't part a of Q9 = 1/3pi(x^2)????

because the sector area is 1/2r^2(theta)
which is 1/2(x^2)(2/3pi)

= 2/6pi(x^2)
= 1/3pi(x^2)
??


You're absolutely right. I put that. It was my foggy memory trying to recall the answers
Original post by richpanda
nope, he's right. x value was 10, y was 13. Those numbers don't compute in what you gave.


I agree with every single one of the OP's answers.


Difference between U9 & U10 is incorrect.
Answer is 1.601
He probably used ar^n
What was the trapezium question? I don't remember a trapezium question :tongue:

EDIT: Oh - trapezium rule! RIP my memory
(edited 7 years ago)
Reply 57
Avatar for math42
math42
20
If anyone has the paper I could do solutions (anything to not revise, and feeling a bit hyped after first uni exam)
Original post by eftio.gea
Guys wasn't part a of Q9 = 1/3pi(x^2)????

because the sector area is 1/2r^2(theta)
which is 1/2(x^2)(2/3pi)

= 2/6pi(x^2)
= 1/3pi(x^2)
??


I got that
Original post by pantherxxxx
1.201? I got 1.6 something and so did the majority of my mates


It was the difference between ar^9 and ar^10 wasn't it?
a = 64
r = 3/4

Can someone confirm?

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