Approximate the critical numbers of the function shown in the graph. Determine whether the function has a relative maximum, a relative minimum, an absolute maximum, an absolute minimum, or none of these at each critical number on the interval shown. (Enter your answers as a comma-separated list.) y 12 10 4 2 MA X Approximate the critical numbers. * = List the critical numbers at which each phenomenon occurs. (If an answer does not exist, enter DNE.) relative maxima X : relative minima X absolute maxima X = absolute minima X =