Question: How to stop myself from plotting numerical noise

A parameterization of the function i am studying this morning produced what seems to be not single valued on the domain i choose,

 


plot(floor((x+1)^2/x^2)-(x+1)^2, x = -10 .. 10, coords = logarithmic);

plot(floor((x+1)^2/x^2)-(x+1)^2, x = -10 .. 10, coords = logcosh);


 

but the cartesian is fine:


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