Determine the open intervals on which the graph s concave upward or concave do n ard. Enter your answers sin n er a notato if an answer does not ex enter g(x) 9x2 -x3 concave upward concave downward
Show transcribed image textDetermine the open intervals on which the graph s concave upward or concave do n ard. Enter your answers sin n er a notato if an answer does not ex enter g(x) 9x2 -x3 concave upward concave downward