The interval of increase for is from to The interval of decrease for is from to has a local minimum at . (Put NA if none.) has a local maximum at . (Put NA if none.) Then = The following questions ask for endpoints of intervals of upward and downward concavity for the function . Write INF for , MINF for , and put NA if there are no intervals of that type.
The interval of upward concavity for is from to The interval of downward concavity for is from to has a point of inflection at . (Put NA if none.)
You can earn partial credit on this problem.