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A function f(x,y) has fxx = â 12x2 + 16, fyy = â 12y2 + 16, and fxy = 0. It has critical points (0,0), (0,±2), (±2,0), and (±2,±2). Classify these critical points as local maxima, local minima, or saddle points.
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Find the critical points of the function h(x)=x+16/x and classify them as either local maxima or local minima