式3: left parenthesis, "x" minus 5 , right parenthesis squared plus left parenthesis, "y" minus 1 , right parenthesis squared less than or equal to 1x−52+y−12≤1
3
式4: left parenthesis, "x" minus 5 , right parenthesis squared plus left parenthesis, "y" minus 3 , right parenthesis squared less than or equal to 1x−52+y−32≤1
4
式5: left parenthesis, "x" minus 3 , right parenthesis squared plus left parenthesis, "y" minus 5 , right parenthesis squared less than or equal to 1x−32+y−52≤1