I am trying to confirm that I am using the CALC feature of my TI-84 Plus graphing calculator correctly. Using the standard window, I am to neatly sketch the the graph of ( y = (4x-1)(3x+1)^4 ) and use the CALC feature to find and record the value of dy/dx for each of these values of ?x=-10, -5, 0, 5, 10. Also can you confirm whether the resulting graph is of the original function of the derivative of the original function.