表达式13: left parenthesis, "b" , "f" left parenthesis, "b" , right parenthesis , right parenthesisb,fb
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表达式14: "b" equals 68.9b=68.9
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表达式15: left parenthesis, "y" minus "f" left parenthesis, "b" , right parenthesis , right parenthesis squared plus left parenthesis, "x" minus "b" , right parenthesis squared less than or equal to 40y−fb2+x−b2≤40
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表达式16: "h" left parenthesis, "x" , right parenthesis equals StartRoot, 10 minus left parenthesis, "x" minus 30 , right parenthesis squared , EndRoot plus 20hx=10−x−302+20
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表达式17: left parenthesis, "c" , "h" left parenthesis, "c" , right parenthesis , right parenthesisc,hc
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表达式18: "c" equals 32.8c=32.8
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表达式19: left parenthesis, "y" minus "h" left parenthesis, "c" , right parenthesis , right parenthesis squared plus left parenthesis, "x" minus "c" , right parenthesis squared less than or equal to 40y−hc2+x−c2≤40
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表达式20: 11 "y" equals left parenthesis, .7 "x" minus 35 , right parenthesis squared minus 500 left brace, 30 less than or equal to "x" less than or equal to 70 , right brace11y=.7x−352−50030≤x≤70
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表达式21: "x" equals 50 left brace, negative 45.5 5 5 less than or equal to "y" less than negative 20 , right bracex=50−45.555≤y<−20
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表达式22: negative "y" equals "x" minus 30 left brace, 40 less than or equal to "x" less than or equal to 50 , right brace−y=x−3040≤x≤50
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表达式23: "y" equals negative 10 left brace, 40 less than or equal to "x" less than or equal to 60 , right bracey=−1040≤x≤60
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表达式24: "y" equals "x" minus 70 left brace, 50 less than or equal to "x" less than or equal to 60 , right bracey=x−7050≤x≤60
