1. Suppose that f ( ) has the first two derivatives as 2x f (x) = f" (x) = 2 (x2 - 4) 12 + 4' (2 + 4)- respectively. Using appropriate sign charts, find a) the intervals on which the function f (@) is increasing/decreasing b) the intervals on which f (@) is concave upwards/downwards and inflection points. c)Use the above calculation to determine which of the following graphs is the graph of f(x). Circle the appropriate colour. RED BLUE GREEN 2