Level curves

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level_curves(Function)

Given a function $f$ and a real $c$ or list $\{c_1,...,c_n\}$, returns the curve $f(x,y)=c$ or curves $f(x,y)=c_i$

Given a function $f$ returns the curve $f(x,y) = c$ for some values of $c$ (see options).

Differentiate