O CT-Mobile '3 1237 PM 9 sites.math.washington.edu (d) Is the graph of f at a: = O concave up, concave down, or neither? 5. (14 points) The following is the graph of the derivative of a function f Use the graph to answer the questions below. In some cases, you may not be able to read an exact value from the graph. If this happens, just approximate the value as well as you can. Graph of the derivative f'(x) (a) List all the intervals Where the function f is decreasing. (b) List all the intervals Where the graph of the function f is concave up. (c) List the a: coordinates of all critical points of f and identify them as local minimum, local maximum, or neither. l (d) W'hat is lim f ? a:->8 (It - 8 (e) If f(4) = O, is f(8) positive or negative? (f) If f(1) = -1.25, use the tangent line approximation to estimate f(0.85)