st: Drawing a Circle

["Eric G. Wruck" <ewruck@econalytics.com>]

All this discussion of polynomials piqued my curiosity, so I thought 
I'd play with twoway function.  In particular, I entered

twoway function y = sqrt(1 - (x)^2), range(-1 1)  || function y = 
-sqrt(1 - (x)^2), range(-1 1)

but my unit circle looks like an ellipse.  What do I have to do to 
make this thing look like the circle it is supposed to be?


Eric


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===================================================

       Eric G. Wruck
       Econalytics
       2535 Sherwood Road
       Columbus, OH  43209

       ph:      614.231.5034
       cell:    614.330.8846
       eFax:    614.573.6639
       eMail:   ewruck@econalytics.com
       website: http://www.econalytics.com

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