Make equation parametric

Hi everyone,

Quick question on how to rewrite an equation with proper formatting using the expression editor

We have:
a(x,y)=x^(3)+xy^(2)-2xy-5x

On GeoGebra it graphs like this:

…thought the site lets you download an .stl, somehow it comes in wrong (no graph geometry) when imported into rhino

initially it seemed straightforward to replicate in gh using mesh points, and still does, but something’s off.

Here’s the file in case you get a minute to look into it and help us see what we missed:
monica_graph_help01.gh (10.8 KB)

thanks for your help!

you can use this

monica_graph_help02.gh (7.7 KB)

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@seghierkhaled yes! that’s it! Many thanks - instead of ‘rewriting’ the equation the values needed to be defined then multiplied at the end to account for that function of a ( a(x,y) )

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