Expression 1: "y" equals StartRoot, "x" , EndRoot minus StartFraction, left parenthesis, "x" minus left parenthesis, floor left parenthesis, StartRoot, "x" , EndRoot , right parenthesis squared , right parenthesis , right parenthesis Over floor left parenthesis, StartRoot, "x" , EndRoot , right parenthesis times 2 , EndFractiony=x−x−floorx2floorx·2