Expression 2: "f" left parenthesis, "x" , right parenthesis equals "x" Superscript, left parenthesis, 1 plus .2 , right parenthesis , Baseline minus "x" times left parenthesis, .2 , right parenthesis left brace, "x" greater than 0 , right bracefx=x1+.2−x·.2x>0
2
Expression 3: "F" left parenthesis, "x" , right parenthesis equals "x" Superscript, left parenthesis, 1 plus .2 5 , right parenthesis , Baseline minus "x" times left parenthesis, .4 , right parenthesis left brace, "x" greater than 0 , right braceFx=x1+.25−x·.4x>0