Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
 You are Here: Home >< Maths

# HELP - Venn Diagrams watch

1. (Original post by mos182)
Finally I'm getting something right

B is a subset of A?
So, A is a subset of B, and B is a subset of A. What does this tell you about A and B?
2. (Original post by ghostwalker)
So, A is a subset of B, and B is a subset of A. What does this tell you about A and B?
They have the same values? So they're basically the same?
3. (Original post by mos182)
They have the same values? So they're basically the same?
They are exactly the same.

So if A and B are the same set then Z is the empty set.

So, just draw one circle and label it A, and B.

Showing A is a subset of B, and B is a subset of A, is a standard technique in set theory for showing two sets are equal, they are in fact one and the same.
4. (Original post by ghostwalker)
They are exactly the same.

So if A and B are the same set then Z is the empty set.

So, just draw one circle and label it A, and B.

Showing A is a subset of B, and B is a subset of A, is a standard technique in set theory for showing two sets are equal, they are in fact one and the same.
What about Z though?

Still a little bit confused about this, but you've been a great help helping me out.

Have you got any other examples or links to examples on this?

Would be handy having them for reference in the future.
5. (Original post by mos182)
What about Z though?
You can't display Z, as it's the empty set - so there's nothing you can shade in. What you can do is show A and B, such that Z is the empty set.

Have you got any other examples or links to examples on this?

Would be handy having them for reference in the future.
Not really. You'll come across them in any basic introduction to sets.
6. (Original post by ghostwalker)
You can't display Z, as it's the empty set - so there's nothing you can shade in. What you can do is show A and B, such that Z is the empty set.

Not really. You'll come across them in any basic introduction to sets.
Yeah we've had an introduction to sets however there's not really any examples of Venn Diagrams or questions like the one I posted. Our recommended textbook doesn't have much on Venn Diagrams either.

Thanks for your help. Seriously don't think I could have done this without your help.
7. (Original post by mos182)
Thanks for your help.
You're welcome.

Reply
Submit reply
Turn on thread page Beta
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: April 6, 2013
Today on TSR

### Negatives of studying at Oxbridge

What are the downsides?

Poll
Useful resources

## Make your revision easier

### 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

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups

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

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