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 commaseparated list.) Y Approximate the critical numbers. x: 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