表达式6: "o" left parenthesis, "x" , right parenthesis equals StartFraction, 1 Over "A" , EndFraction "S" left parenthesis, "x" , right parenthesisox=1ASx
6
表达式7: negative 2 less than or equal to "y" less than or equal to "o" left parenthesis, "x" minus 2 , right parenthesis minus 2 left brace, abs left parenthesis, "x" minus 2 , right parenthesis less than or equal to StartFraction, pi Over 2 , EndFraction , right brace−2≤y≤ox−2−2absx−2≤π2
