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).