From: dherring@at.tentpost.dot.com   
      
   On 03/01/2014 07:54 PM, Richard Fateman wrote:   
      
   > Isn't it possible that sqrt(4) has 2 values, sqrt(-4) has 2 values as well?   
      
   +2...   
      
   -2...   
      
   +2...   
      
   -2....   
      
   Nope.  +2 for me!   
      
   :)   
      
   Honestly, the way math was taught in school, to this day it is easy   
   for me to see x^2 but hard to see both branches of sqrt(x) for   
   positive x -- even though they are essentially the same curves.  I   
   think it was all the emphasis on functions having a single output   
   value for a given input.  If sqrt(x) is a function, then...   
      
   - Daniel   
      
   --- SoupGate-Win32 v1.05   
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