Expression 2: "r" left parenthesis, "x" , right parenthesis equals mod left parenthesis, "x" Superscript, "n" , Baseline , 1 , right parenthesisrx=modxn,1
2
Expression 3: "r" left parenthesis, 10 plus StartFraction, floor left parenthesis, "x" times 1000 , right parenthesis Over 1000 , EndFraction , right parenthesisr10+floorx·10001000