MATH-1325-THQ 8, 2018-10-15 10:33 4. (10 points) For the given function answer the following questions: f(z) = In(x2 + 16) (a) Find all cut points of the second derivative, f" (z): (b) Give the sign chart of f"(z): (c) Give the corresponding concavity chart of f (r): (d) Give the interval(s) where the function f(r) is concave upward: (e) Give the interval(s) where the function f(x) is concave downward: (f) Give the location(s) of each inflection point in the format (r, y)