Find the intervals on which the graph of f is concave upward

Last updated: 6/30/2023

Find the intervals on which the graph of f is concave upward the intervals on which the graph of f is concave downward and the inflection points f x x 9x 13x 7 For what interval s of x is the graph of f concave upward Select the correct choice below and if necessary fill in the answer box to complete your choice A Type your answer in interval notation Type an exact answer Use a comma to separate answers as needed OB The graph is never concave upward