Instructions: PROBLEM: Given f(x)=.04(8x-x2) Find the rate of change of elevation when x = 2 WITHOUT taking a derivatives directly. The first student should let x = 1. So find f(2+1) and find f(2-1) to find the slope between two points. The second student should select and POST as the first line of their post their x < 1 and find the appropriate f(x+x ) and f(x-x ) to find the slope between two DIFFERENT POINTS closer to the x=2 value. Also include in your title the value of your x! The third student should select and POST their new x < the second student's value. Again find the new appropriate f(x+x ) and f(x-x ) to find the slope between two DIFFERENT POINTS even closer to the x=2 value. Below is the last students work - It needs to work from change of elivation of 0.16