A Maths problem

 Question 3: A Maths Problem

 For what real values of x is


\sqrt{x+\sqrt{2x-1}} + \sqrt{x-\sqrt{2x-1}} = A,
given (a) A=\sqrt{2}, (b) A=1, (c) A=2, where only non-negative real numbers are admitted for square roots? 
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Echo , the dolphin

Echo, a dolphin is trying to jump through a circular hole in his enclosure to escape from the aquarium. From echo's perspective just u...