P: "P" equals left parenthesis, "a" , "f" left parenthesis, "a" , right parenthesis , right parenthesis equals left parenthesis, 2 , 1 , right parenthesis Has graph. To audio trace, press ALT+T.P=a,fa
Label:
equals=
left parenthesis, 2 , 1 , right parenthesis2,1
3
Expression 4: "f" left parenthesis, "a" , right parenthesis equals 1fa