3y=(logx)^2 whether it is a function or not........i think it should be a function but answer given in my book is tht it is not a function.

It is not a function when defined on the set of real no as for x belonging to an negative no the function donot returns a real no but a complex one. But is is a function between (0,infinity) because at every point in this domain the function returns a unique real value. 

man i got it......actually in book just above d question it was written tht x belongs to R.....now i understood tht it is not a function.......huh,it is so easy question...