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March 11th, 2014, 12:01 AM  #1 
Senior Member Joined: Oct 2013 From: Far far away Posts: 422 Thanks: 18  When is it true?
If m and n are integers, under what circumstances will m^2  n^2 be positive? My answer is when m>n, statement m^2  n^2 > 0 Is this the correct answer? Is there a better way to see the problem? thanks 
March 11th, 2014, 06:36 AM  #2  
Member Joined: Mar 2013 Posts: 90 Thanks: 0  Re: When is it true? Quote:
 
March 11th, 2014, 06:44 AM  #3  
Math Team Joined: Apr 2010 Posts: 2,778 Thanks: 361  Re: When is it true? Quote:
 
March 11th, 2014, 08:30 AM  #4 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,355 Thanks: 2469 Math Focus: Mainly analysis and algebra  Re: When is it true?
But the OPs answer of m > n is correct nonetheless.

March 12th, 2014, 04:36 AM  #5 
Member Joined: Mar 2013 Posts: 90 Thanks: 0  Re: When is it true?
Sorry, my mistake. is equivalent to . 

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