On Wed, 5 Sep 2001 19:45:30 -0400, "Nathan Kopp" <nat### [at] koppcom>
wrote:

>Taking the square root of a negative number is not defined in real number
>space.  This is the source of your problem.

Right, thanks. I added abs() and now it renders fine. Sorry to bother
y'all with this.

sig
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ICQ 74734588

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