Find the intervals on which x) rs" increasing, the -'-iint_eniais on which for)\" as decreasing. and the local wextrama. - - I . '}~_r(x3::=_-x3 $4x$3 ' s; Enter the function x) and the derivative f'(x) into a graphing calcuiator to produce a graph of both in the same viewing window. Select the correct choice below and. :if necessary. mg in the answer box to complete your choice. 0 A- The function f(x) is increasing on I. (Type your answer using interval notation. Type integers or simplied fractions. Use a comma to separate answers as needed.) 0 B. The function f(x) is never increasing