Thingiverse
Limit Pathology
par stepanp21
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This is a model of the graph of a function f(x,y) with the property that the limit as (x,y) -> (0,0) does not exist, despite the fact that limits along linear paths through the origin do exist.
The formula for f(x,y) is given below:
f(x,y) = cos(2*theta) = (x^2 - y^2) / (x^2 + y^2)
The formula for f(x,y) is given below:
f(x,y) = cos(2*theta) = (x^2 - y^2) / (x^2 + y^2)
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