Find the intervals on which f is increasing and the intervals on which it is decreasing. f(x) = x +2x Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice. O A. The function is increasing on the open interval(s) and decreasing on the open interval(s) (Simplify your answers. Type your answers in interval notation. Use a comma to separate answers as needed.) O B. The function is decreasing on the open interval(s) . The function is never increasing. (Simplify your answer. Type your answer in interval notation. Use a comma to separate answers as needed.) O C. The function is increasing on the open interval(s) The function is never decreasing. (Simplify your answer. Type your answer in interval notation. Use a comma to separate answers as needed.) O D. The function is never increasing nor decreasing.Find the intervals on which f is increasing and decreasing f(x) = 2x- - 36 Inx Select the correct choice below and, if necessary, fill in the answer box(es) within your choice. O A. The function is increasing on the open interval(s) and decreasing on the open interval(s) (Simplify your answers. Type your answers in interval notation. Use a comma to separate answers as needed.) O B. The function is increasing on the open interval(s) . The function is never decreasing (Simplify your answer. Type your answer in interval notation. Use a comma to separate answers as needed.) O C. The function is decreasing on the open interval(s) The function is never increasing. (Simplify your answer. Type your answer in interval notation. Use a comma to separate answers as needed.) O D. The function is never increasing or decreasing.Perform a rst derivative test on the function x} = 2x3 + 6x2 - 911x +1; [ 5,6]. 3. Locate the critical points of the given function. I}. Use the rst derivative test to locate the local maximum and minimum values. c. Identify the absolute minimum and maximum values of The function on the given interval {when they exist). <: locate the critical points of given function. select conect choice below and if necessary ll in answer box within your choice. point are located at x="D." a comma to separate answers as needed. b. there no>