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###### Use a graph and/or level curves to estimate the localmaximum and minimum values and saddle point(s) of thefunction. Then use calculus to find these values precisely.$$f(x, y)=x y e^{-x^{2}-y^{2}}$$

Use a graph and/or level curves to estimate the local maximum and minimum values and saddle point(s) of the function. Then use calculus to find these values precisely. $$f(x, y)=x y e^{-x^{2}-y^{2}}$$

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