SOLUTION: explain why function y=x square has no inverse.suggest how many inverse can you define for it

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Question 18446: explain why function y=x square has no inverse.suggest how many inverse can you
define for it
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
y=x square is a function because for every x there is a unique image in y for example no two different values of y correspond to same value of x ........ where as the inverse equation x=square root of (y)..does not give raise to a unique image for y ..for example y=+4 can have 2 images in x namely +2 and -2.in such a case it is not called a function
we can make it a function by redefining x as equal to only
..... + square root of (y)..