運算式 5: "X" left parenthesis, "t" , right parenthesis equals mod left parenthesis, "t" , 10 , right parenthesisXt=modt,10
5
運算式 6: "Y" left parenthesis, "t" , right parenthesis equals negative .1 times floor left parenthesis, StartFraction, "t" Over 10 , EndFraction , right parenthesisYt=−.1·floort10