2. Given the function f(z) = (2-1)2 Find the following: (a) /3 points) the intervals where f(z) is increasing and where f(x ) is decreasing; (b) /1 point/ the relative extrema of f (z), if any; (c) /3 points/ the intervals where f(z) is concave upward and where f (r) is concave downward; and (d) /1 point) all the inflection point(s) of f (x), if any