Consider the function. - = (x)/ Find the critical point(s) of f. (Give your answer in the form of a comma-separated list. Express numbers in exact form. Use symbolic notation and fractions where needed. Enter DNE if the function has no critical points.) critical point(s): Use the First Derivative Test to determine whether the critical point(s) yields a local minimum or a local maximum. (Give your answer in the form of a comma-separated list. Express numbers in exact form. Use symbolic notation and fractions where needed. Enter DNE if the function has no local minimum or local maximum.) local minima at x = local maxima at x = Find the intervals on which the function is increasing or decreasing. (Give your answer as an interval in the form (*,*). Use the symbol co for infinity, U for combining intervals, and an appropriate type of parenthesis "(",")", "I","I" depending on whether the interval is open or closed. Enter 3 if the interval is empty. Express numbers in exact form. Use symbolic notation and fractions where needed.) is increasing on f is decreasing on