FSMQ (Additional Maths)

Hey everybody I'm working through this paper

http://www.ocr.org.uk/Data/publications/past_papers_2007_june/FSMQ_Additional_Mathematics_6993_01_June_2007_Question_Paper.pdf

and I was wondering if anybody could help me with number 6.

I've got up to dy/dx at (2, 6) = 9 but i'm struggling to get to the answer on the markscheme
which is http://www.ocr.org.uk/Data/publications/mark_schemes/FSMQ_Additional_Mathematics_Mark_Scheme_June_2007.pdf

there
anybody out there willing to give me hand?

thanks :smile:

Reply 62

Ziffachan

Well you know the gradient. So if you use y=mx+c you know that y=9x+c

So substitute in the values for (2,6), so:

6=(9x2)+c
6=18+c
Rearrange this
c=6-18
c=-12

So y=9x-12

Reply 63

OP

Wasnt that obvious anyway? :s-smilie:

ah thanks

OP

yehp using the equation of a straight line works quicker here

Reply 66

toby_ling

For variable acceleration, as you move down the labels, you differentiate. And, as you move up, you integrate. That's how I manage to remember it!

On that paper, the last part of the last question is a bitch!

Reply 67

Jeppaloth

I am extremely confused, I am doing an exam on Friday the 6th, the teacher calls it additional maths. My exam is 2 hours long, 40 questions and it is multiple choice.. I have never heard of most of the stuff you are doing.

Is it likely I am doing the same exam?

Reply 68

Jeppaloth

Thank **** for that! My subject when I chose it was described as Maths FSMQ. Come to think of it, I think I am doing this one next year. You don't know how releived I am, I was buckling down ready to do 5 hours a day.

Reply 69

OP

ahaha lucky you!
i wouldnt mind a multiple choice maths exam. pfff :p:

uth =]

Reply 70

toby_ling

I am looking to lose a maximum of 20 marks! More than that, and I consider my A to be gone!

Reply 71

Ziffachan

Losing 20 marks maximum gets you a very comfortable A...

Reply 72

Jeppaloth

uthred50

ahaha lucky you!
i wouldnt mind a multiple choice maths exam. pfff :p:

uth =]

What makes it even easier is the questions are like;

One of these statements is wrong, 3 are right. Circle the wrong statement.

A
B
C
D

I think I found a pattern in how they chose them, they seem to do A about 1/10, B 2/10, C 3/10 and D4/10. It isn't going to get me a A* single handedly but that + some lucky guessing should get me closer.

It makes sense that A is less because if A is wrong you don't even have to look at the rest. It might just have been the 1 mock we did in class though.

Reply 73

Ziffachan

Can you get an A* for that one? Our one is graded like A levels, so we can get A-E or U.

Reply 74

Guinny

8

Ziffachan

Can you get an A* for that one? Our one is graded like A levels, so we can get A-E or U.

It's like an A-Level. Well... an inbetweener I'd say. Highest is an A :] *dreams*

I hate kinematics

sundogs

Hey everybody I'm working through this paper

http://www.ocr.org.uk/Data/publications/past_papers_2007_june/FSMQ_Additional_Mathematics_6993_01_June_2007_Question_Paper.pdf

and I was wondering if anybody could help me with number 6.

I've got up to dy/dx at (2, 6) = 9 but i'm struggling to get to the answer on the markscheme
which is http://www.ocr.org.uk/Data/publications/mark_schemes/FSMQ_Additional_Mathematics_Mark_Scheme_June_2007.pdf

there
anybody out there willing to give me hand?

thanks :smile:

I did that paper on saturday after finally getting round to going over the entire syllabus. I thought I knew literally nothing - turned out I knew a lot more than I thought. I got 86% which is well into an A. :biggrin:

I hope I can do that in the actual exam.

Reply 77

OP

omg meliae!
Your signature refers to i'm going slightly mad by queen. great song!
Well you missed loads of lines in between, but still.
I lovveee Queen! You should so join Classic Rock Society :biggrin:

Join Here

uthred =]

Reply 78

Meliae

uthred50

omg meliae!
Your signature refers to i'm going slightly mad by queen. great song!
Well you missed loads of lines in between, but still.
I lovveee Queen! You should so join Classic Rock Society :biggrin:

Join Here

uthred =]

Me too

I went to a Queen tribute thing the other week. It was amazing. I thought the entire song in one sig might be a bit excessive, so I just picked a couple of my favourite lines. I love the lyrics to that song. xD

Reply 79

OP