You are Here: Home >< Maths

1. Hey, I'm trying to work out the value of e as the coefficient of restitution as an inequality, I've got up to:

but I can't get any further with getting e < 9/16

Any help would be appreciated
2. (Original post by Jemeter)
Hey, I'm trying to work out the value of e as the coefficient of restitution as an inequality, I've got up to:

but I can't get any further with getting e < 9/16

Any help would be appreciated
Can't see what the problem is. All I see is a warning of some kind!
3. Um, it's (4e+4)/25 > (4e-4)/5
4. (Original post by Jemeter)
Um, it's (4e+4)/25 > (4e-4)/5
Can you tell me the whole question or what exam paper it's from, because I can't figure out how you get e < 9/16 from that!?
5. It's Edexcel M2 June 2006, it's quite a long winded question... =P
6. (Original post by Jemeter)
Um, it's (4e+4)/25 > (4e-4)/5

According to the mark scheme
http://www.edexcel.com/migrationdocu...s_20060616.pdf that should be:

(4e+4)/25 > (4e-1)/5

So, I'd suspect an error in your previous working.
7. (Original post by Jemeter)
It's Edexcel M2 June 2006, it's quite a long winded question... =P
Right I've found the paper, and basically your inequality is wrong, it isn't

"(4e+4)/25 > (4e-4)/5"

it should be (4e+4)/25 > (4e-1)/5

I can't tell you where your working went off, but you're slightly off.

If you can't see where you went wrong then just reply and I'll show my working for you.

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: February 10, 2010
Today on TSR

### Uni league tables

Do they actually matter?

### University open days

• Staffordshire University
Everything except: Midwifery, Operating Department Practice, Paramedic Undergraduate
Sun, 21 Oct '18
• University of Exeter
Wed, 24 Oct '18
Wed, 24 Oct '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