Use a graph and/or level curves to estimate the local maximum and minimum values and saddle points of the function. (Do this on paper. Your instructor may ask you to turn in this work.) Then use calculus to find these values precisely. (Enter NONE in any unused answer blanks. Sort your answers in increasing order, first by x - coordinate, then by y coordinate.) f(x, y) = x² + y² + x-2y-2+3 and Find the local maximum and minimum values and saddle point(s) of the function. If you have three dimensional graphing software, graph the function with a domain and viewpoint that reveal all the important aspects of the function. (Enter NONE in any unused answer blanks.) f(x, y) = 7 sin(x) sin(y), -# < X < 1, -π

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