Expression 1: left parenthesis, 2 left parenthesis, ceil left parenthesis, StartFraction, ceil left parenthesis, "x" , right parenthesis squared minus "x" squared Over 4 left parenthesis, floor left parenthesis, "x" , right parenthesis squared plus 1 , right parenthesis , EndFraction , right parenthesis , right parenthesis minus 1 , right parenthesis "x" positive floor left parenthesis, left parenthesis, 2 left parenthesis, ceil left parenthesis, StartFraction, ceil left parenthesis, "x" plus 0.1 , right parenthesis squared minus left parenthesis, "x" plus 0.1 , right parenthesis squared Over 4 left parenthesis, floor left parenthesis, "x" plus 0.1 , right parenthesis squared plus 1 , right parenthesis , EndFraction , right parenthesis , right parenthesis minus 1 , right parenthesis left parenthesis, "x" plus 0.1 , right parenthesis plus 0.2 , right parenthesis left parenthesis, 1 minus ceil left parenthesis, "x" minus floor left parenthesis, "x" , right parenthesis , right parenthesis , right parenthesis2ceilceilx2−x24floorx2+1−1x+floor2ceilceilx+0.12−x+0.124floorx+0.12+1−1x+0.1+0.21−ceilx−floorx