นิพจน์ 2: left parenthesis, "a" , 0 , right parenthesisa,0
2
นิพจน์ 3: left parenthesis, 0 , "a" , right parenthesis0,a
3
นิพจน์ 4: "y" equals "a" plus StartFraction, "a" Over "a" minus 11 , EndFraction "x" left brace, "x" greater than 0 , right brace left brace, "y" greater than 0 , right bracey=a+aa−11xx>0y>0