Graph of sqrt(x)

Clearly a bug in the web2.0calc graphing as it has drawn the square root of the absolute value of x.

How are you drawing this graph? By hand, graphing calculator, etc.?

Why when I draw the graph for sqrt(x) it appears to have values for x<0?

If y=sqrt(x)  and y is in the real number system then x cannot be less then x

That is, you cannot find the squareroot of a negative number

Here is the graph.

https://www.desmos.com/calculator/zeallc6van

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Where did you graph it to get results of x<0 ??

Why when I draw the graph for sqrt(x) it appears to have values for x<0?

Thanks Heureka,

However,

  I do not think any of these graphs are 

y=sqrt(x) when x is negative.

"Why when I draw the graph for sqrt(x) it appears to have values for x<0?"

You don't show what your graph looks like.  If it looks like the one below then you've plotted the square root of the absolute value of x:

.

It looks like this when I use web2.0calc.com to draw it:

http://i64.tinypic.com/2ihqull.jpg

Ok. Thank you all!

I suggest that you use Desmos for you graphs.  :)

https://www.desmos.com/calculator