Find each interval on which f(x) is increasing and decreasing for the following function. (Enter your answers using interval notation.) f(x) = 3x1/3 x increasing DNE ' X decreasing (00: _ 1) X Find all relative extrema. (If an answer does not exist, enter DNE.) x ) local maximum at (x, y) = (' _17 _ 2 ' X ) local minimum at (x, y) = d 1:2 Find the intervals on which the function is concave up and down. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) concave up DNE X concave down X Find each inection point. (If an answer does not exist, enter DNE.) (x,y):( DNE ix)