You are Here: Home >< Maths

# I struggle to understand what is asked in some A level Math exam questions!! watch

1. I'm studying AS-level maths but sometimes the wording of questions just confuses me so I don't know how to answer the questions because I don't know what is asked of me!

2. Just make sure you read the question fully. Also make sure that you look at a specific topic if you find that you frequently don't know what they're asking on that specific topic.
3. (Original post by Philip-flop)
I'm studying AS-level maths but sometimes the wording of questions just confuses me so I don't know how to answer the questions because I don't know what is asked of me!

Could you post an example, possibly?
4. If you are doing past papers, then simply take them to your teacher and ask for an explanation. You will get used to spotting and becoming familiar with them.
5. (Original post by Zacken)
Could you post an example, possibly?
Hi Zacken,

It always seems to be questions like this that I have trouble with

Click to enlarge...
6. (Original post by Philip-flop)
Hi Zacken,

It always seems to be questions like this that I have trouble with

Click to enlarge...
For part (a), you know the volume of a cylinder formula (or if not, look it up), so you can write this down in terms of x and h, and equate it to the given value of 60, then rearrange to make h the subject.

For part (b), you should also know the surface area of a cylinder formula, so write it down in terms of x and h, then you can substitute in your expression from (a) to get an expression just in terms of x, as required.

For part (c), you know how to find maxima/minima using calculus: differentiate your expression for A from part (b), equate it to zero, and solve for x.

For part (d), just substitute your value of x from part (c) into the expression for A from part (b), and evaluate it using a calculator. Then round your answer to the nearest integer as requested.

For part (e), use the second derivative test: find d^2A/dx^2, then sub in the value of x from part (c), and confirm that the answer is positive.
7. (Original post by HapaxOromenon)
For part (a), you know the volume of a cylinder formula (or if not, look it up), so you can write this down in terms of x and h, and equate it to the given value of 60, then rearrange to make h the subject.

For part (b), you should also know the surface area of a cylinder formula, so write it down in terms of x and h, then you can substitute in your expression from (a) to get an expression just in terms of x, as required.

For part (c), you know how to find maxima/minima using calculus: differentiate your expression for A from part (b), equate it to zero, and solve for x.

For part (d), just substitute your value of x from part (c) into the expression for A from part (b), and evaluate it using a calculator. Then round your answer to the nearest integer as requested.

For part (e), use the second derivative test: find d^2A/dx^2, then sub in the value of x from part (c), and confirm that the answer is positive.
Wow!! thanks, that helped me out a lot!! So grateful!

### 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: March 24, 2016
The home of Results and Clearing

### 2,443

people online now

### 1,567,000

students helped last year
Today on TSR

### University open days

1. Keele University
Sun, 19 Aug '18
2. University of Melbourne
Sun, 19 Aug '18
3. Sheffield Hallam University
Tue, 21 Aug '18
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