Expression 3: "f" left parenthesis, "x" , right parenthesis equals floor left parenthesis, "e" Superscript, left parenthesis, "n" "x" minus "n" , right parenthesis , Baseline "m" , right parenthesisfx=floorenx−nm
3
Expression 4: "f" left parenthesis, 1 , right parenthesisf1