Are there any differences between the graphs and ?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
If we solve for y in the second equation, we get: y = ± x . That means, in the first equation, there are only positive outputs. In the second equation, there are both positive and negative outputs.