Expression 2: "g" left parenthesis, "x" , right parenthesis equals "x" cubedgx=x3
2
Expression 3: "h" left parenthesis, "x" , right parenthesis equals sine "x"hx=sinx
3
Expression 4: "k" left parenthesis, "x" , right parenthesis equals StartFraction, "x" squared Over "e" Superscript, "x" , Baseline , EndFractionkx=x2ex