1. Sep 27, 2010 #1

   mkeg1

   

   1. The problem statement, all variables and given/known data
   
   Started at (x * x/sqrt(1+x^2))/sqrt(1+x^2)-1
   
   2. Relevant equations
   
   
   
   3. The attempt at a solution
   
   now im at
   
   (x^2 (1 + x)^(1/2) - x^2)/(1 + x)^(1/2)
   
   
   I am stuck on how to simplify further

    

   mkeg1, Sep 27, 2010
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3. Sep 28, 2010 #2

   AC130Nav

   

   Your simplification looks wrong, unless I'm reading the problem incorrectly.
   
   (x * x / sqrt(1+x^2)) / sqrt(1+x^2)-1
   x^2 * (1+x^2)^-1/2 * (1+x^2)^1/2
   Can you go on from there?

    

   AC130Nav, Sep 28, 2010

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