Expression 5: "g" left parenthesis, "x" , right parenthesis equals Start sum from "n" equals 1 to "s" , end sum, left parenthesis, "L" left bracket, "n" , right bracket "x" Superscript, "n" , Baseline , right parenthesisgx=s∑n=1Lnxn
5
Expression 6: sine left parenthesis, "y" , right parenthesis plus "y" equals "x"siny+y=x
6
Expression 7: sine left parenthesis, "g" left parenthesis, "x" , right parenthesis , right parenthesis minus "g" left parenthesis, "x" , right parenthesis left brace, negative pi less than or equal to "x" less than or equal to pi , right bracesingx−gx−π≤x≤π