OCR MEI C2 Mathematics [June 3rd 2015]

OP

Original post by corey7695

how're you finding it?

not bad just find sequences and identity's quite hard :s-smilie:

how about you?

Reply 3

RonanWalters

Hey, I'm taking this too. Almost gone through all of the exam papers now, just been taking my time. Don't know how I feel about the exam since sometimes I feel like I know my stuff, but then there's some exam questions that just really screw me over.

You guys looking forward to it, or?

Reply 4

OP

Original post by RonanWalters

Hey, I'm taking this too. Almost gone through all of the exam papers now, just been taking my time. Don't know how I feel about the exam since sometimes I feel like I know my stuff, but then there's some exam questions that just really screw me over.

You guys looking forward to it, or?

Im scared need a good grade in this to make up for c1 and s1 which i messed up :s-smilie:

Reply 5

RonanWalters

Original post by Leah97

Im scared need a good grade in this to make up for c1 and s1 which i messed up :s-smilie:

I wouldn't worry about C2 too much, I think it's harder to make silly mistakes on it compared to C1 (not sure about s1) and you can get awarded quite a few marks for the smaller questions. (:

Is there anything you find particularly hard in c2?

Reply 6

corey7695

11

Original post by Leah97

not bad just find sequences and identity's quite hard :s-smilie:

how about you?

its ok, log graphs need a bit more work though..

Reply 7

OP

Original post by RonanWalters

I wouldn't worry about C2 too much, I think it's harder to make silly mistakes on it compared to C1 (not sure about s1) and you can get awarded quite a few marks for the smaller questions. (:

Is there anything you find particularly hard in c2?

sequences just about kill me!

Reply 8

SN1_

What calculators are you guys using for the exam and any that you recommend buying before the exam that would genuinely help, or will I be fine with using a general scientific calculator ?

Reply 9

bethknott

Original post by SN1_

What calculators are you guys using for the exam and any that you recommend buying before the exam that would genuinely help, or will I be fine with using a general scientific calculator ?

Posted from TSR Mobile

I am using just a normal casio scientific calculator (fx-83GT PLUS) ^_^

Reply 10

bethknott

Does anyone have any good resources or advice on how to do these questions? I can never do them :frown:

Reply 11

Drumz4

2

Can anyone help me out with the question below? Thanks

Reply 12

Aph

22

Okay... So this is the third OVR MEI C2 thread that's been made....

Reply 13

OP

Original post by Drumz4

Can anyone help me out with the question below? Thanks

for y=3f(x) you times the y value by 3 which makes the coordinates (6,9) for the y=f(4) you times the x value by 1/4 by 6 which makes (1.5,3) :h:

Reply 14

Olivia98hey

2

I found C1 harder than S1 (S1 was really good), I probably got a C in C1 which sucks 😑😑 I really hope I can get at least a B on C2 though so I can get a B overall, tbh C2 isn't as bad as C1 it's just about learning formulas and getting used to the questions, as long as the paper is similar to the ones from like 2012 - 2014 I think we should all be alright hopefully! *fingers crossed*!😘 what are you guys' thoughts on the C1 and S1 exams? & how's C2 revision coming along?

Posted from TSR Mobile

Reply 15

M.C. Math

7

Original post by Drumz4

Can anyone help me out with the question below? Thanks

A general tip for these type of questions...

If the change is outside f(x), the x-coordinate stays the same, the y-coordinate changes. So for (i), instead of x=6, y=3, x=6, y=3*3 to give (6,9)

If the change is inside the brackets, the y-coordinate stays the same, the x-coordinate changes. So for (ii), instead of x=6, y=3, 4x=6, y=3. If 4x=6, x=6/4, i.e. 1.5. So the coordinate becomes (1.5, 3)

Reply 16

Drumz4

2

@Leah97, @M.C. Math
Thanks for the help, I appreciate it :smile:

Reply 17

Crozzer24

7

Original post by bethknott

Does anyone have any good resources or advice on how to do these questions? I can never do them :frown:

I find the easiest way to answer these questions is by using a cast diagram! Assuming you haven't been taught this then google it there's some good websites telling you how to use them

Reply 18

M.C. Math

7

Original post by bethknott

Does anyone have any good resources or advice on how to do these questions? I can never do them :frown:

StudentRoomThread3357567-011.jpg288.3KB

Hi bethknott. How comfortable are you at solving equations of the type
sin x = -0.5 for a given range, e.g. 0 < x < 180 degrees?

Just trying to determine if the difficulty is with finding the answers within the range, and/or just handling the 2x part?

There is a full solution below.
First, I adjust the range of values, then find the first solution, use the CAST diagram to find the second solution, then adjust the values back to the original range.

Reply 19

bethknott

Original post by M.C. Math

Hi bethknott. How comfortable are you at solving equations of the type
sin x = -0.5 for a given range, e.g. 0 < x < 180 degrees?

Just trying to determine if the difficulty is with finding the answers within the range, and/or just handling the 2x part?

There is a full solution below.
First, I adjust the range of values, then find the first solution, use the CAST diagram to find the second solution, then adjust the values back to the original range.

Thank you! Though I still don't really get it :frown:

I think if I could memorise sin cos and tan graphs I'd be alright but I never can and we don't get one in the exam! I've never used that CAST diagram before so I'm not really sure what you did with it :3
It's not so much the 2x I struggled with, it's actually finding the range for all questions like this. Thank you for your help :smile: