On CoCalc.com, I get "unable to simplify to float approximation" error when
I run
var('x y')
plot3d(heaviside(x-y),(x,-1,1),(y,-1,1))
On the other hand,
var('x y')
plot3d(heaviside(x),(x,-1,1),(y,-1,1))
plot3d(heaviside(y),(x,-1,1),(y,-1,1))
renders as expected. Is there "correct" way to do this, or at least some
workaround?
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