In the following questions, consider the function f(x) = 8 si Enter DNE if an answer does not exist. a) Give the domain of f (in interval notation): b) Determine the intervals on which f is concave up/down: f is concave up on: f is concave down on: c) Based on your answers in (a) and (b), determine the inflection points of f help (numbers) (Each answer should be entered as an ordered pair, (x, y). Separate multiple a d) Find the critical numbers of f and use the Second Derivative Test, when poss Relative maxima occur at 2 = Relative minima occur at x= (Separate multiple answ (Separate multiple answe