This is the problem which arises when we consider the below mentioned two functions identical: (#) y^2=x (#) y = square root of x These 2 functions are not identical but then also I have seen on various forums that they are being considered identical. For example: y^2=25 will have solutions as y=+5,...

I think that the way I have put it is right because in the very first solution suggested in this post, it is being considered that square root of x gives 2 solutions [y= square root of x] as does y^2 = x , hence being considered identical and we get the answer as option 'A'. But yeah I agree that ro...

Thanks for such a wonderful explanation for eliminating the options containing the word - BOTH; but I am really confused how to choose between C and D; someone please suggest.

Thanks.