# Set theory help

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#1
I need help, for p1 is it possible to draw a graph? If yes I need help drawing it.
For p2 I need to draw the graph and find the range and domain.

Thank you

In p1 the Q is the set of all rational numbers, and {0} is the empty set ( I think since I've only been taught that the empty set is written as { }, can some please confirm that {0} is the empty set? )
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5 years ago
#2
What's the question?
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#3
(Original post by james22)
What's the question?
I just realised I didn't attach the Q, I've uploaded it now
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5 years ago
#4
(Original post by Vorsah)
I just realised I didn't attach the Q, I've uploaded it now
That isn't a question, what do you actually need to do?

Also {0} is not the empty set, it is the set containing only 0 as an element. The empty set contains no elements.
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#5
(Original post by james22)
That isn't a question, what do you actually need to do?

Also {0} is not the empty set, it is the set containing only 0 as an element. The empty set contains no elements.
I've said what I need help with in the first 2 lines
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5 years ago
#6
(Original post by Vorsah)
I've said what I need help with in the first 2 lines
You haven't, you've given a set and ask if it would help to draw a graph. Since I have no idea what it is your trying to achieve, I cannot say if it would help or not.

What is the full question?
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#7
(Original post by james22)
You haven't, you've given a set and ask if it would help to draw a graph. Since I have no idea what it is your trying to achieve, I cannot say if it would help or not.

What is the full question?
Okay for p1 the the question is: show this relationship on a graph

For p2 the question is: find the range, domain, and show this relationship on a graph
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5 years ago
#8
(Original post by Vorsah)
Okay for p1 the the question is: show this relationship on a graph

For p2 the question is: find the range, domain, and show this relationship on a graph
Is that the full, undeditted question? p1 still makes no sense to me, and p2 I would have to make some assumptions about what is being asked.
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#9
(Original post by james22)
Is that the full, undeditted question? p1 still makes no sense to me, and p2 I would have to make some assumptions about what is being asked.
For p1 I needed to find the domain and range but I've already done that, so I just need to show it on a graph.

For p2 that's the full question
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5 years ago
#10
(Original post by Vorsah)
For p1 I needed to find the domain and range but I've already done that, so I just need to show it on a graph.

For p2 that's the full question
Is this a question about functions? Because domain and range don't make sense without functions.
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#11
(Original post by james22)
Is this a question about functions? Because domain and range don't make sense without functions.
I haven't really done functions yet, this question I think is more to do with relationships
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5 years ago
#12
(Original post by Vorsah)
I haven't really done functions yet, this question I think is more to do with relationships
Can you upload a picture of the question? You seem to be missing a chunk of it out.
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#13
(Original post by james22)
Can you upload a picture of the question? You seem to be missing a chunk of it out.
What I said is the full question. I can't upload the Q because I'm on my iPad and I've literally copied the question from the PowerPoint.
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5 years ago
#14
(Original post by Vorsah)
What I said is the full question. I can't upload the Q because I'm on my iPad and I've literally copied the question from the PowerPoint.
It isn't the full question because it makes absolutely no sense. You haven't even said what you need to find the domain and range of.
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#15
(Original post by james22)
It isn't the full question because it makes absolutely no sense. You haven't even said what you need to find the domain and range of.
The domain and range of P subscript 2 as you can see in the attachment
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5 years ago
#16
(Original post by Vorsah)
The domain and range of P subscript 2 as you can see in the attachment
P_2 is a set, sets do not have domains and ranges.
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