PD 8 1. Let f(x) = 2 - 2. 4 E + f is increasing on the intervals f is decreasing on the intervals 3. The relative maxima of f occur at x = 4. The relative minima of f occur at a = 8 Find the open intervals on which f is increasing (decreasing). Then determine the a-coordinates of all relative maxima (minima). 22 Notes: In the first two, your answer should either be a single interval, such as (0,1), a comma separated list of intervals, such as (-inf, 2), (3,4), or the word "none". In the last two, your answer should be a comma separated list of a values or the word "none".