Monday, 15 August 2011

Why does 0.9999... = 1 ?

Proof: 0.9999... = 1
   Thus     x = 0.9999...  
          10x = 9.9999... 
      10x - x = 9.9999... - 0.9999... 
           9x = 9 
            x = 1.
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