You are Here: Home >< A-levels

# Current Year 13 Thread (2013/14) - Mark I Watch

1. (Original post by L'Evil Fish)
S3?!
yeah for afm lol
(Original post by keromedic)
??
Ah cool, so you've cut back on the STEP Qs a bit.
well I was generally doing one a day so not really
2. (Original post by Robbie242)
yeah for afm lol

well I was generally doing one a day so not really
Ah, thought you had gone up to 2 a day, 3 on weekends.
3. A2 mathematicians help me with this ? I'm really really stuck on it!
Find the inverse function of f(x) = x^2(4-x) and tell me how you do it please ? I'm up to the bit where it's x= y^2(4-y)

Posted from TSR Mobile
4. (Original post by krishkmistry)
A2 mathematicians help me with this ? I'm really really stuck on it!
Find the inverse function of f(x) = x^2(4-x) and tell me how you do it please ? I'm up to the bit where it's x= y^2(4-y)
Posted from TSR Mobile
Where did you get that question from? I can't see an easy way to do it tbh.
5. (Original post by krishkmistry)
A2 mathematicians help me with this ? I'm really really stuck on it!
Find the inverse function of f(x) = x^2(4-x) and tell me how you do it please ? I'm up to the bit where it's x= y^2(4-y)

Posted from TSR Mobile
Make y the subject again

Posted from TSR Mobile
6. (Original post by Qari)
Make y the subject again

Posted from TSR Mobile
I don't know how to!!!

Posted from TSR Mobile
7. (Original post by usycool1)
Where did you get that question from? I can't see an easy way to do it tbh.

Part (iv)

Posted from TSR Mobile
8. (Original post by krishkmistry)

Part (iv)

Posted from TSR Mobile
Ah that makes more sense.

Well, if y = f(x), the inverse function, is a reflection of the original function across y = x. So you basically take the reciprocal of the gradient of the original function.
9. (Original post by usycool1)
Ah that makes more sense.

Well, if y = f(x), the inverse function, is a reflection of the original function across y = x. So you basically take the reciprocal of the gradient of the original function.
So I've spent 3 hours trying to solve it and all it took was that - WHY ?!

Major thankyou btw ! You're always the hero

Posted from TSR Mobile
10. (Original post by usycool1)
Ah that makes more sense.

Well, if y = f(x), the inverse function, is a reflection of the original function across y = x. So you basically take the reciprocal of the gradient of the original function.
So are you saying find the gradient of the original dy/dx of f(x) by sticking 7/8 into the function and find the reciprocal of the answer you get ?

Posted from TSR Mobile
11. Got the answerrrr thanks usycool1

Posted from TSR Mobile
12. (Original post by L'Evil Fish)
...

(Original post by usycool1)
...
Hey usy, would you mind editing my university choices? I've put it in the correct format so it's not that much of a hassle for you.
Spoiler:
Show

Felix Felicis
AS Subjects: Maths, Further maths, Physics, Chemistry, Geography, Additional Further Maths
A2 Subjects: Maths, Further maths, Physics, Chemistry
University choices: Cambridge, Imperial, Bristol, Bath, Nottingham.

(This is for Mechanical Engineering)
13. (Original post by krishkmistry)

Posted from TSR Mobile
No worries!

(Original post by Felix Felicis)
Hey usy, would you mind editing my university choices? I've put it in the correct format so it's not that much of a hassle for you.
Spoiler:
Show

Felix Felicis
AS Subjects: Maths, Further maths, Physics, Chemistry, Geography, Additional Further Maths
A2 Subjects: Maths, Further maths, Physics, Chemistry
University choices: Cambridge, Imperial, Bristol, Bath, Nottingham.

(This is for Mechanical Engineering)
Sure thing...mechanical engineering now?
14. made a blog about the last leg of my journey through a levels and my attempt to turn around my grades,followed are appreciated if you have tumblr or id encourage you to at least take a look
http://thejourneythrougheducation.tumblr.com/
15. Fighting the urge to make my own 'ask me anything' thread haha.
16. (Original post by mynameisntbobk)
Fighting the urge to make my own 'ask me anything' thread haha.
haha I've being doing that for quite some time
17. (Original post by usycool1)
Sure thing...mechanical engineering now?

For quite some time now, actually. I didn't apply for maths, ultimately, but have only gotten around to changing this now.
18. (Original post by Felix Felicis)

For quite some time now, actually. I didn't apply for maths, ultimately, but have only gotten around to changing this now.
19. (Original post by Felix Felicis)

Hey usy, would you mind editing my university choices? I've put it in the correct format so it's not that much of a hassle for you.
Spoiler:
Show

Felix Felicis
AS Subjects: Maths, Further maths, Physics, Chemistry, Geography, Additional Further Maths
A2 Subjects: Maths, Further maths, Physics, Chemistry
University choices: Cambridge, Imperial, Bristol, Bath, Nottingham.

(This is for Mechanical Engineering)
Well done
20. (Original post by Robbie242)
haha I've being doing that for quite some time
Haha I would have thought you'd have done one already, although I can imagine all the hate you'd get

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: January 9, 2014
Today on TSR

### Degrees to get rich!

... and the ones that won't

### Women equal with Men?

Discussions on TSR

• Latest
• ## 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.

• Poll

## All the essentials

### Student life: what to expect

What it's really like going to uni

### Essay expert

Learn to write like a pro with our ultimate essay guide.

### Create a study plan

Get your head around what you need to do and when with the study planner tool.

### Resources by subject

Everything from mind maps to class notes.

### Study tips from A* students

Students who got top grades in their A-levels share their secrets

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## 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.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.