Ccea Watch

This discussion is closed.
CH500
Badges: 0
#1
Report Thread starter 15 years ago
#1
Anyone doing an exams in CCEA in Northern Ireland???

How did you get on in your exams??

Any issues you want to address??
0
Unregistered
Badges:
#2
Report 15 years ago
#2
i ccea maths, really ragged bout it, it was rather easy this year, but i know i done shite in it, did u do maths? i have a question on it that still annoys me.
CH500
Badges: 0
#3
Report Thread starter 15 years ago
#3
did you do GCSE/AS/A2 maths?

I recently sat the AS edexcel maths but have done other subjects in CCEA
0
Unregistered
Badges:
#4
Report 15 years ago
#4
AS/A2 Maths
Unregistered
Badges:
#5
Report 15 years ago
#5
What was the question?

I did CCEA A2 maths, P2 and P3.
Unregistered
Badges:
#6
Report 15 years ago
#6
P3 Q4
Find the coordinates of any turning points on the curve:
y= (3x^2)/e^x

determine the nature of these turning points

i think i diff using quotient rule twice or something.
Unregistered
Badges:
#7
Report 15 years ago
#7
dy/dx = (6xe^x - 3x^2e^x)/e^x^2 = 0 for a turning point.

Denominator can't be zero, so 6xe^x - 3x^2e^x = 0
e^x(6x - 3x^2) = 0

Again, e^x can't be zero. Solving the quadratic, gives x = 2 and x = 0. Can easily find out the y co-ords, so I've not done it.

d^2y/dx^2 = [e^x^2(6e^x - 3x^2e^x) - 2xe^x^2(6xe^x - 3x^2e^x)]/(e^x^2)^2

I hope that's right.. gives me the right results.

Sub in x = 2 and d^2y/dx^2 < 0, so therefore a max. x = 0 and d^2y/dx^2 > 0, so it's a minimum.

Hope that helps.
Unregistered
Badges:
#8
Report 15 years ago
#8
thanks. what did u think of the maths this year?
Unregistered
Badges:
#9
Report 15 years ago
#9
I didn't do CCEA, I did Edexcel .
Unregistered
Badges:
#10
Report 15 years ago
#10
I hear Edexcel Maths was hard this year. CCEA A level maths was rather straight forward. in comparison to everyother year beforehand. I was looking at the P3 Edexcel Jun 03, but i thought it looked ok, however there didn't seem to be enough time to answer each question, as well as very little marks for the amount of working out that had to be done, even though the paper is 75 raw marks, that didn't seem enough for that paper.
Unregistered
Badges:
#11
Report 15 years ago
#11
That P3 was very nasty .
CH500
Badges: 0
#12
Report Thread starter 15 years ago
#12
Did anyone do CCEA A2 Music this year? If so email me at the following address: [email protected]

If you did AS Music, email me too!!
0
Ollie
Badges: 1
Rep:
?
#13
Report 15 years ago
#13
dont even talk to me about this years p3......... grrrrrrrrrr..... :mad:
0
X
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Are you chained to your phone?

Yes (57)
19.32%
Yes, but I'm trying to cut back (119)
40.34%
Nope, not that interesting (119)
40.34%

Watched Threads

View All
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise