Expression 1: "f" left parenthesis, "x" , right parenthesis equals StartFraction, "x" left parenthesis, "x" plus 1 , right parenthesis Over 2 , EndFractionfx=xx+12
1
"x" Subscript, 1 , Baselinex1
"f" left parenthesis, "x" Subscript, 1 , Baseline , right parenthesisfx1