MathGroup Archive 2005

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Plotting 2d graphs?

I'm having trouble using the basic 2d plot function.  I want to be
able to plot things such as a simple quadratic or ellipse:

Examples:  2x^2 + 16x + 32 = 0  (Quadratic)

(x-5)^2/16 + (y+4)^2/25 = 1  (Ellipse)

But have failed to do so, having tried every variation i can think of
to get it to work.

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