FRQ 1 A graphing calculator may NOT be used for the following problem. The figure above shows the graph of f ', the derivative of a twice-differentiable function f, on the interval [3, 4]. Answer the following questions based on the graph off'. 3) Find all x-coordinates at which f has critical values and identify them as a relative minimum, relative maximum, or neither. Justify your answer. b) On what open intervals contained in [3, 4] is the graph offboth concave up and decreasing? Justify your answer. c) Find the x-coordinates of all points of inflection on the graph off