You are Here: Home >< Maths

# C3 functions Watch

1. http://www.examsolutions.net/a-level...y/paper.php#Q7

7b

why isn't this right?
let

2. The last step you took was halve both sides, right? If we take the half out, so we're left with 0.5(1/x+1), we can then expand out properly to get y=1/2x+1/2=(1+x)/2x
3. (Original post by an_atheist)
The last step you took was halve both sides, right? If we take the half out, so we're left with 0.5(1/x+1), we can then expand out properly to get y=1/2x+1/2=(1+x)/2x
oh ok i see
4. You are correct.
5. (Original post by bigdonger)
why isn't this right?

Why do you think it's not right?
6. (Original post by B_9710)
You are correct.
ah...
(Original post by Zacken)
Why do you think it's not right?
because it wasn't the same as the "most simplified" version of the answer which was in the solution video.
7. (Original post by bigdonger)
Because it wasn't the same as the "most simplified" version of the answer which was in the solution video.
Alright, can you see how to simplify it down now?
8. (Original post by Zacken)
Alright, can you see how to simplify it down now?
yes
9. (Original post by bigdonger)
yes
Great.

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: July 17, 2016
Today on TSR

### Medicine offers rolling in

Which unis have sent theirs?

### I refused to be served by tattooed cashier

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
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

## 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.