. Consider the following function f(x) =ax tax - ax-a A1-2 A2-9 A3-3 A0- 2 and add the corresponding coefficients (see list): 1. State the intervals where f increases and decreases. 2. Find the extreme values of f. 3. Use the Newton-Raphson method to approximate the roots of f to 5 decimal places. Find the inflection points. 4. Sketch the graph of f. This must contain the information calculated in parts b, c and d