The blue graph is the graph of the slope values of f(x): the DERIVATIVE
4
수식 5: "f" left parenthesis, "x" , right parenthesis equals left brace, "x" less than 2 : "x" squared minus 1 , "x" greater than or equal to 2 : 5 minus "x" , right bracefx=x<2:x2−1,x≥2:5−x