$2.$ Consider $()=23+3212+1$ on $[2,4]$ Locate the critical numbers of $$ Use the First Derivative Test to locate local maximum and minimum values. $($Be sure to say where they occur.$)$ Identify the absolute maximum and minimum values on the interval $($when they exist$).($Be sure to say where they occur.$)3.$ Determine the interval$($s$)$ where $()=(3)$ is concave up or concave down and identify any inflection point$($s$).$