Question: Example 1. Given to the right is a contour plot for the func- tion f(r, y) = r' + 2y + ry+3. Verify that (2,

Example 1. Given to the right is a contour plot for the func- tion f(r, y) = r' + 2y + ry+3. Verify that (2, -1), (0,0), and (-2, -1) are critical points of f. Then, decide whether f has a lo- cal maximum, a local minimum, or a saddle point at each critical 4- point. -1 -2 -3 -2 -1 0

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