[pstricks] implicit function

[Herbert Voss]

Denis Vergès wrote:

> I want draw
> z=- x^2  + 600x - 2xy + 800y - 2y^2
> for z = 0, 20 000, 40 000, 60 000, 80 000, 100 000

try first
http://min.informatik.uni-tuebingen.de/min_minApplets_index_index.html

under "Einstellungen->Koordinatensystem" enter the values for
the coordinate system.

Herbert


-- 
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