Maths-
General
Easy

Question

If (x1 ,y1) and (x2, y2) and ends of a focal chord of the parabola y to the power of 2 end exponent = 4ax, then square of G.M. of x1 and x2 is-

  1. –4a to the power of 2 end exponent    
  2. 4a to the power of 2 end exponent    
  3. a to the power of 2 end exponent    
  4. a to the power of 2 end exponent    

The correct answer is: a to the power of 2 end exponent

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