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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: Hooligan on October 27, 2009, 05:58:16 pm

Title: VCAA Exam 1 2004
Post by: Hooligan on October 27, 2009, 05:58:16 pm

Question 2 in Networks and decision mathematics module.

I don't get the question at all...  ??? Can someone explain?  :-\

EDIT: What is the definition of an equivalent graph?

Title: Re: VCAA Exam 1 2004
Post by: techhatesme on October 27, 2009, 07:12:53 pm

Are you sure that it is part of the current study design?

Title: Re: VCAA Exam 1 2004
Post by: Hooligan on October 27, 2009, 10:46:11 pm

Quote from: techhatesme on October 27, 2009, 07:12:53 pm

Are you sure that it is part of the current study design?

I'm not too sure myself either...  :-\

Title: Re: VCAA Exam 1 2004
Post by: kazoospasm on October 27, 2009, 11:40:32 pm

Planar graphs are equal when they can be used to represent the same network.
That is, they're essentially the same graph drawn differently.

Note: I'm not doing Networks, so this could be completely wrong.

Title: Re: VCAA Exam 1 2004
Post by: Hooligan on October 28, 2009, 03:02:29 pm

Quote from: kazoospasm on October 27, 2009, 11:40:32 pm

Planar graphs are equal when they can be used to represent the same network.
That is, they're essentially the same graph drawn differently.

Note: I'm not doing Networks, so this could be completely wrong.

right... then show me how to do this question?

Title: Re: VCAA Exam 1 2004
Post by: Gloamglozer on October 28, 2009, 03:44:03 pm

Maybe the question is asking which of the planar graphs are identical?

I haven't done the VCAA 2004 exam yet unfortunately.

Title: Re: VCAA Exam 1 2004
Post by: dshban on October 28, 2009, 04:03:55 pm

Ah, I had this question in a SAC.

It's asking which graphs are exactly the same in terms of vertices connecting to other vertices - ie, graphs which are identical except moved around a bit. For example, look at Graph J. Its lower left vertex is connected to a vertex which connects diagonally to another and straight to another. It's hard to explain in just words, here, I'll try this:

Title: Re: VCAA Exam 1 2004
Post by: Gloamglozer on October 28, 2009, 04:12:05 pm

Ah, so it's not asking what a equivalent graph actually is, but it's asking about which of the graphs are identical.  Thanks.

Title: Re: VCAA Exam 1 2004
Post by: Hooligan on October 28, 2009, 05:59:05 pm

Quote from: dshban on October 28, 2009, 04:03:55 pm

Ah, I had this question in a SAC.

It's asking which graphs are exactly the same in terms of vertices connecting to other vertices - ie, graphs which are identical except moved around a bit. For example, look at Graph J. Its lower left vertex is connected to a vertex which connects diagonally to another and straight to another. It's hard to explain in just words, here, I'll try this:

Oh, so its actually just wanting us to find the graphs which are identical, in terms of the vertices (which stay put). :D Gotcha.

Thanks soo much! :)