x Turn on thread page Beta
 You are Here: Home >< Maths

# AS Maths: What do these questions mean? watch

1. (Original post by Mr M)
You don't need to learn how to differentiate to find the maximum or minimum of a quadratic.

Anyway, how would you write all x values that are to the right of (-1, 16)?

Hint: use inequalities.
...I am an idiot...

2. (Original post by ziedj)
Both myself and Mr M have explained not only how to solve the question using completing the square (meaning differentiation not required), but also explained part iii as well. (Well, his was more of an explanation, mine was more of an "it's obvious, draw a graph" type thing )
Yea sorry about that. I corrected my post but you were too fast haha.
3. (Original post by Thrug)
x > -1

Also never seen a question like that before. Guess we're only about 3 weeks into C1.
Yes, if you are doing OCR, they say (but will mark > correct). Their reasoning is that it starts to increase at the stationary point.
4. (Original post by Mr M)
Yes, if you are doing OCR, they say (but will mark > correct). Their reasoning is that it starts to increase at the stationary point.
I'd like to say I knew that but cba to use latex.. however, I'd have thought it would have to be greater than but I see your point from where it "starts" to increase would be at -1 so I guess an equals to makes sense.

On a side note could you check the Q in http://www.thestudentroom.co.uk/show....php?t=1426073

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: October 2, 2010
Today on TSR

### Is uni even worth it?

Does anyone use their degree?

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams