- + Automatic Zoom 2. The function f is defined, for a > 0. by Inc f(x) = k x+l where k is some positive constant. Determine the values of k for which f has critical (or stationary) points. For each such k, find any critical points. In the case where k = 2, determine whether any critical point is a local maximum, local minimum or inflexion point. 3. Determine the following integrals: 12 + 7:0+ 12 In(x + 2) V.r +2