cesar82 Posted December 21, 2008 Share Posted December 21, 2008 Is 2*|a-b| = |2a-2b|? Can |a+b|=2|a-b| be squared as follows: (a+b)^2 = 4 (a-b)^2? Thanks Quote Link to comment Share on other sites More sharing options...
DWarrior Posted December 22, 2008 Share Posted December 22, 2008 Yes and yes, you can show both if you use |x|=sqrt(x^2) ps, it's absolute value, modulus has to do with remainder ;) 1 Quote Link to comment Share on other sites More sharing options...
cesar82 Posted December 22, 2008 Author Share Posted December 22, 2008 Thanks :) Quote Link to comment Share on other sites More sharing options...
DWarrior Posted December 23, 2008 Share Posted December 23, 2008 oops, you were right. Modulus can refer to absolute value, I didn't know that until today. Quote Link to comment Share on other sites More sharing options...
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