Expression 2: "y" equals natural log left parenthesis, 2 "x" , right parenthesis left brace, "x" greater than 1 , right bracey=ln2xx>1
2
Expression 3: "y" equals negative natural log left parenthesis, negative 2 "x" , right parenthesis left brace, "x" less than negative 1 , right bracey=−ln−2xx<−1
3
Expression 4: "y" equals "x" left brace, negative 1 less than "x" less than 1 , right bracey=x−1<x<1