Use a graph below of f(x) = In(3x2 + 1) to estimate the x-values of any critical points and inflection points of f(). critical points (enter as a comma-separated list): x = 0 inflection points (enter as a comma-separated list): x = -0.5,0.5 Next, use derivatives to find the x-values of any critical points and inflection points exactly. critical points (enter as a comma-separated list): x = 0 inflection points (enter as a comma-separated list): x = -2,2