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Prove that graph of D is closed !

aoun1

New member
Oct 7, 2013
1
The question is in the attached picture. Thanks. :)
 

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MarkFL

Administrator
Staff member
Feb 24, 2012
13,775
Re: prove that graph of D is closed !

Can you show what you have tried so that our helpers know specifically where you are stuck and can offer hints/suggestions to allow you to proceed?

When you simply post a question, we have no idea what you have tried, and so suggestions might be given that you have already tried, and this would waste your time and the time of the helper. :D