[jordan95]

Just created this thread for people who will be sitting the MEI C1 (4751) exam on Wednesday 16th May.

I'm resitting after getting 78 UMS in the January exam; I'm quite optimistic this time round, but with the unpredictable nature of MEI who knows what monstrosities could find their way into the exam paper.

That being said, I have found that, on most papers, for a lot of the 'more difficult' questions (those towards the end of Section B) the key tends to lie with a quadratic equation.

Anyway, aiming for 100 UMS on this paper! I hope it goes well for everyone else too!

[Salvatore8]

Anymore ideas on what could come up?
and just to ask, how did you get 78 first time round?

[tehforum]

Don't focus on trying to question spot.

UNDERSTAND the material, then do the past papers.

[King of the Jungle]

Hi can someone help me with question 7 http://www.mei.org.uk/files/papers/c107ju_6gfd3.pdf

[tehforum]

(Original post by King of the Jungle)
Hi can someone help me with question 7 http://www.mei.org.uk/files/papers/c107ju_6gfd3.pdf

(4x+5)/2x = -3

4x+5=-6x
10x+5=0
10x=-5
x=-1/2

[King of the Jungle]

(Original post by tehforum)
(4x+5)/2x = -3

4x+5=-6x
10x+5=0
10x=-5
x=-1/2

sorry i mean 11i

[Alotties]

I'm sitting this exam.
Also got a B in Jan
Hoping for around 90UMS or so.

[Alotties]

(Original post by King of the Jungle)
sorry i mean 11i

grad = 7 - 3 /3 - 1 = 4/2 = 2
perp grad = -1/2
y - y1 = m (x - x1)
y - 7 = -1/2 (x - 3)
2y - 14 = -x + 3
2y = x + 17
x + 2y = 17

[AspiringGenius]

I'm doing this exam, not resitting

Any tips for how to succeed? In some mocks I am getting 100% or very close, in others a few questions throw me. they always seem to be thing like circle equations, or factor theorum. Can someone explain factor theorus to me please? I've tried going over it, but I don't seem to get the concept, perhaps some dicussion may aide me.

Are there any othe relevant polynomial theorums?

[Alotties]

(Original post by AspiringGenius)
I'd be happy to help with most things if you ask!

I'd also be happy to help anyone
Or try my best anyways!


I hate the implication questions.
In Jan I only got 1/4 marks in the ones that came up xD
I also seemed to lose just one mark on a few questions so I am going to make sure I don't miss any steps that deserve marks in my calculations

[AspiringGenius]

(Original post by Alotties)
I'd also be happy to help anyone
Or try my best anyways!


I hate the implication questions.
In Jan I only got 1/4 marks in the ones that came up xD
I also seemed to lose just one mark on a few questions so I am going to make sure I don't miss any steps that deserve marks in my calculations

I don't mind the implication ones, it's the questions like: prove that n^2 + n is always even. I got it right, but i never know quite what they want to see--- do they want n(n+1) (which was right, plus a supporting statement), or implication symbols? or worked examples of different integers? non integers?

[Alotties]

(Original post by halii_94)
Doing this exam for the first time on Wednesday

You will be fine!
We all will on here unless we get a killer question (which won't happen )

(Original post by AspiringGenius)
I don't mind the implication ones, it's the questions like: prove that n^2 + n is always even. I got it right, but i never know quite what they want to see--- do they want n(n+1) (which was right, plus a supporting statement), or implication symbols? or worked examples of different integers? non integers?

I usually do some examples but it all depends on the question.
Usually implication ones leave you like a box to write them in I think

[AspiringGenius]

(Original post by Alotties)
You will be fine!
We all will on here unless we get a killer question (which won't happen )



I usually do some examples but it all depends on the question.
Usually implication ones leave you like a box to write them in I think

Can you help me with factor or remainder theorum please? Its the only thing I haven't really learnt properly. I'm trying to teach myself now but we didn't go over it in class.

My question is from June 2010 paper, using factor theorum,

f(x)=x^3 + 6x^2 - x - 30. Using factor theorum find a root of f(x)=0 and factorise completely.

Now I can factorise completely, and by observation I can tell that x=2 is a root of this polynomial. This means the fully factorised version becomes f(x)=(x-2)(x+3)(x+5), but as this is all by observation, I am prettty certain I'd lose all the marks.

How wuld you go about this?

[Benniboi1]

Ergh, C1, I remember you.

Why you no let me use a calculator?

[Alotties]

(Original post by AspiringGenius)
Can you help me with factor or remainder theorum please? Its the only thing I haven't really learnt properly. I'm trying to teach myself now but we didn't go over it in class.

My question is from June 2010 paper, using factor theorum,

f(x)=x^3 + 6x^2 - x - 30. Using factor theorum find a root of f(x)=0 and factorise completely.

Now I can factorise completely, and by observation I can tell that x=2 is a root of this polynomial. This means the fully factorised version becomes f(x)=(x-2)(x+3)(x+5), but as this is all by observation, I am prettty certain I'd lose all the marks.

How wuld you go about this?

I would go about it by testing certain numbers!
I usually start with 1 or 2.
So...
f(2) = (2)^3 + 6(2)^2 - (2) - 30
= 8 + 24 - 32
= 0
Then I'd do polynomial division by x - 2 to find the other factors.
(click to enlarge image)


(x - 2)(x^2 + 8x + 15)
(x - 2)(x + 3)(x + 5)

That's how I'd do it

[AspiringGenius]

(Original post by Alotties)
I would go about it by testing certain numbers!
I usually start with 1 or 2.
So...
f(2) = (2)^3 + 6(2)^2 - (2) - 30
= 8 + 24 - 32
= 0
Then I'd do polynomial division by x - 2 to find the other factors.
(click to enlarge image)


(x - 2)(x^2 + 8x + 15)
(x - 2)(x + 3)(x + 5)

That's how I'd do it

but isn't there a more rigid methos as opposed to trial and error. isn't that essentially just observation method, but with a few guesses first?

[Alotties]

(Original post by Benniboi1)
Ergh, C1, I remember you.

Why you no let me use a calculator?

This is how I felt in Jan!
Lost 2 marks because my subtracting was rubbish

[AspiringGenius]

(Original post by Benniboi1)
Ergh, C1, I remember you.

Why you no let me use a calculator?

c1 with a calculator would just be fun! and maths isn't allowed to be fun! :L (or not AS anyway)

[Alotties]

(Original post by AspiringGenius)
but isn't there a more rigid methos as opposed to trial and error. isn't that essentially just observation method, but with a few guesses first?

I was never taught another method and this is the one I have always used so I can't help you, I am not sure if there are any other methods

[Benniboi1]

(Original post by AspiringGenius)
c1 with a calculator would just be fun! and maths isn't allowed to be fun! :L (or not AS anyway)

Very true if you do further maths then then you have FP2 to look forward to next year