14 12 10 8 6 4 2 X -2 4 5 (a) Estimate the coordinates of the relative maxima, relative minima, or horizontal points of inflection by observing the graph. (If an answer does not exist, enter DNE.) relative maxima ( x, y ) = relative minima ( x, y ) = horizontal points of inflection ( x, y ) = (b) Use y' = f'(x) to find the critical values. (Enter your answers as a comma-separated list.) X = (c) Find the critical points. ( x, y ) = Need Help? Read It