Expressão 2: floor left parenthesis, .5 "y" , right parenthesis plus 1 equals "x" left brace, 2 "x" minus 1 less than "y" , right bracefloor.5y+1=x2x−1<y
2
Expressão 3: "x" equals left parenthesis, "y" minus StartFraction, floor left parenthesis, "y" , right parenthesis Over 2 , EndFraction , right parenthesis times left parenthesis, 1 minus mod left parenthesis, floor left parenthesis, "y" , right parenthesis , 2 , right parenthesis , right parenthesis plus left parenthesis, StartFraction, floor left parenthesis, "y" , right parenthesis Over 2 , EndFraction plus 0.5 , right parenthesis times left parenthesis, left parenthesis, mod left parenthesis, floor left parenthesis, "y" , right parenthesis , 2 , right parenthesis , right parenthesis , right parenthesisx=y−floory2·1−modfloory,2+floory2+0.5·modfloory,2