運算式 5: "f" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis plus "g" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesisf9x+g9x
5
運算式 6: "f" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis minus "g" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesisf9x−g9x
6
運算式 7: "g" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis minus "f" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesisg9x−f9x
7
運算式 8: "f" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis times "g" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesisf9x·g9x
8
運算式 9: StartFraction, "f" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis Over "g" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis , EndFractionf9xg9x
9
運算式 10: StartFraction, "g" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis Over "f" Subscript, 9 , Baseline left parenthesis, "x" , right parenthesis , EndFractiong9xf9x
