Expression 1: absolute value ( absolute value ( mod ( "x" , 4 ) minus 2 ) minus 1 )abs(abs(mod(x,4)−2)−1)
1
Expression 2: min left parenthesis, mod left parenthesis, "x" , 2 , right parenthesis , 2 minus mod left parenthesis, "x" , 2 , right parenthesis , right parenthesis positive 2minmodx,2,2−modx,2+2