運算式 4: floor left parenthesis, "x" , right parenthesis plus .1 times sine left parenthesis, 10 squared "x" , right parenthesis greater than or equal to floor left parenthesis, "y" , right parenthesis plus .1sine left parenthesis, 10 squared "y" , right parenthesisfloorx+.1·sin102x≥floory+.1sin102y