นิพจน์ 2: "f" left parenthesis, "x" , right parenthesis equals negative 0.4 8 "x" cubed plus 1.4 7 "x" left brace, 1 greater than or equal to "x" greater than or equal to negative 1 , right bracefx=−0.48x3+1.47x1≥x≥−1
2
นิพจน์ 3: 0.0 3 "x" minus 0.9 6 left brace, "x" less than negative 1 , right brace0.03x−0.96x<−1
3
นิพจน์ 4: 0.0 3 "x" plus 0.9 6 left brace, "x" greater than 1 , right brace0.03x+0.96x>1