I do not know how to do these. Please help

Use the graph of the function f(x) displayed below to answer the following questions. ...... ....... ...... ...... ...... ...... ..... ..... ...... ...... . . . . .. . . . .... . .... ..... ....' ..... .... ..... ....' . ..... ..... ...... . ..... :4 +3 -2/ A 10 ...... is ..... ..... .. .... ..... :...... .4.. ...... ...... (a) Find the critical values where f'(x) =0 . (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) X = (b) Find the critical values where f'(x) DNE . (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) X = (c) Find the x-coordinate(s) of the relative minima for f(x). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) X = (d) Find the x-coordinate(s) of the relative maxima for f(x). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) X =For the function below, determine each of the following. f(x) = 4x3 6x2 + 504x (a) Find all critical values of f(X). (Enter your answers as a comma-separated list.) x: (b) Find all intervals on which f(x) is increasing and all intervals on which f(x) is decreasing. Enter your answers using interval notation. Increasing: Decreasing: (c) Find the x-coordinates of all relative extrema on the graph of f(X). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) Relative Maxima: Relative Minima