no i have definitely tried working it out already.
i took derivative of both sides of the plus sign
the answer should come out to zero
but im not getting newhere near that.
im getting something like x/ [(x^2 -1)(x^2 -1)^2] - 1/[|x|(x^2-1)^2]
before simplifying, and after simplifying its not zero..urgh i cannot get it