For a single variable function f(x), what does it mean when we state that lim x->3 f(x) exists?(adsbygoogle = window.adsbygoogle || []).push({});

Also for the multivariable function f(x, y), what does it mean when we state that lim x->3, y->2 f(x, y) exists?

Also how can I graph z=1/4((x-5)^2+(y+3)^3)^1/2 on the xy-plane as a set of contours representing static values of z.

And how can I graph the same function but on the yz-plane as a set of contours representing static values of x.

Thanks ^_^

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# Functions quiestions

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