You are Here: Home >< Maths

CCEA C3- 13th May 2014 watch

1. Hey, does anyone have this exam tomorrow? How do you think it'll go?
2. Yess any suggestions on what will come up?
3. Does anymore remember their answer to the fish drawing question? I didn't get any x^2 terms so I just said b=0

The question was

X=3t^2 Y=3t-t^3

Can be written as Cartesian equation

Y^2= ax^3+bx^2+cx

Find a, b and c
4. What were the answers for questions about the binomial and the partial fractions. They were question 4 and 3.
5. (Original post by Conor3669)
What were the answers for questions about the binomial and the partial fractions. They were question 4 and 3.
A was -1/2 and N was 1/2 for the binomial anyway
6. I didn't get any x^2 terms either
7. I didn't get an x^2 term either!
As for the partial fractions A was 1 B was 1 and C was -2 if I remember correctly
8. The partial fractions was 1/(x+2) - 2/(x+1)^2

The Cartesian equation was a = 1/27, b = -2/3 and c = 3

Posted from TSR Mobile
9. (Original post by Hollienikita)
The partial fractions was 1/(x+2) - 2/(x+1)^2

The Cartesian equation was a = 1/27, b = -2/3 and c = 3

Posted from TSR Mobile

Yeah I got the same
10. What did everyone get for the differentiation?

Posted from TSR Mobile
11. I got b = 0, how did everyone find the binomial expansion. Didn't get any answer but wrote down an incorrect method
12. (Original post by jamesjmillar)
I got b = 0, how did everyone find the binomial expansion. Didn't get any answer but wrote down an incorrect method
The binomial expansion was:

(1+ax)^n = 1+anx + (n(n-1))/2! (a^2)(x^2)

Or something along these lines I can't remember the question exactly or what each term equaled but then I just set an=(x term)
n=(x term coefficient)/a
And then worked it out I think.
I did get a=1/2 and b=-1/2

For the normal to the curve I did tangent, how many marks do you think I'll lose because of that?
13. (Original post by SandraMR)
The binomial expansion was:

(1+ax)^n = 1+anx + (n(n-1))/2! (a^2)(x^2)

Or something along these lines I can't remember the question exactly or what each term equaled but then I just set an=(x term)
n=(x term coefficient)/a
And then worked it out I think.
I did get a=1/2 and b=-1/2

For the normal to the curve I did tangent, how many marks do you think I'll lose because of that?
I did the tangent too 😩 hoping it won't be a lot of marks!

Posted from TSR Mobile
14. Does anyone have an unofficial mark scheme?
15. The answer was (9,0) I think for the Cartesian question
16. (Original post by Annemary)
The answer was (9,0) I think for the Cartesian question
sounds good! That's what I got

Posted from TSR Mobile
17. I assume everyone here is doing C4 on the 26th too?

Posted from TSR Mobile
18. (Original post by Keith.)
I assume everyone here is doing C4 on the 26th too?

Posted from TSR Mobile
Yep!

Posted from TSR Mobile
19. Hey everyone, I just made this thread for Core 4 on Tuesday.

Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: May 21, 2015
Today on TSR

A-Level OCR Biology Unofficial Markscheme

Find out how you've done here

3,426

students online now

Exam discussions