(3) For f(x) In(x+4) (a) Find the domain. (b) Find all critical numbers of f(x) (c) Use second derivative test to compute the intervals where f(x) is concave upward and concave downward (d) Use the second derivative to find all inflection point(s) (e) Use 2nd deriv test to indicate if the C.N.'s give min's, or max's.