That is, (LGA) 2 = (LGB) 2

And a is not equal to b, a is not equal to 1, and b is not equal to 1.

Then lga=-lgb

a= 1/b

So ab= 1

2、lgy/(2lgx)=lgx/(2lgy)

(lgy)^2=(lgx)^2

Lgy=lgx or lgy=-lgx.

So y=x or y= 1/x(x is not equal to 1 and y is not equal to 1).