表达式2: "S" left parenthesis, "x" , right parenthesis equals 3 "x" squared minus 2 "x" cubedSx=3x2−2x3
2
表达式3: 3 "x" squared minus 2 "x" cubed3x2−2x3
3
表达式4: "S" left parenthesis, max left parenthesis, min left parenthesis, "x" , 1 , right parenthesis , 0 , right parenthesis , right parenthesisSmaxminx,1,0