Use the given graph of the function to answer the following questions. Assume that the graph extends only as far as is shown, that is only on the interval .
1. Find the
open interval(s) on which
is concave upward.
Answer (in
interval notation):
2. Find the open interval(s) on which is concave downward.
Answer (in interval notation):
3. Find the coordinates of the points of inflection. List your answers as points in the form .
Answer (separate by commas):
Note: You can click on the graph to enlarge the image.
Hint: