I need solve this questions of Calculus ii

porn Given the function f (x) = (x2 9)? dened on [2, 2] 1. f (x) has a critical number at x = 2. The function f (x) is increasing from f to 3. The function f (x) is decreasing from fl to Cl port 2 1) [10 Points] Find the critical numbers of the function f(x) = x3 - gxz + 12x. 2) [10 Points] Find where the function f (x) = x $113 is increasing or decreasing. Find also the local extreme values of f. 3) [10 Points] Discuss the curve f(x) = x4 33:3 with respect to concavity, points of inection, and local maximum and minimum