Maths-
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Easy

Question

If the two curves y equals x to the power of 2 end exponent plus 1 and x to the power of 2 end exponent plus y to the power of 2 end exponent equals 1 touch each other at (0,1) then the equation of the common tangent is

  1. y=1    
  2. x=0    
  3. x=1    
  4. y=0    

The correct answer is: y=1



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