表达式22: "x" equals negative 3 left brace, 0 less than or equal to "y" less than or equal to 1 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=−30≤y≤1
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表达式23: "x" equals negative 5 left brace, 0 less than or equal to "y" less than or equal to 1 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=−50≤y≤1
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表达式24: "x" equals negative 4 left brace, 0 less than or equal to "y" less than or equal to 1 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=−40≤y≤1
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表达式25: "y" equals "x" plus 5 left brace, negative 2 less than or equal to "x" less than or equal to 0 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=x+5−2≤x≤0
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表达式26: "y" equals 5 left brace, 0 less than or equal to "x" less than or equal to 5 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=50≤x≤5
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表达式27: "y" equals negative "x" plus 10 left brace, 5 less than or equal to "x" less than or equal to 6 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−x+105≤x≤6
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表达式28: "x" equals 6 left brace, 1 less than or equal to "y" less than or equal to 4 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=61≤y≤4
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表达式29: "y" equals "x" minus 5 left brace, 5 less than or equal to "x" less than or equal to 6 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=x−55≤x≤6
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表达式30: "y" equals negative "x" minus 1 left brace, 0 less than or equal to "y" less than or equal to 1 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−x−10≤y≤1
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表达式31: "y" equals 0 left brace, negative 1 less than or equal to "x" less than or equal to 5 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=0−1≤x≤5
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表达式32: left parenthesis, "x" plus 7.1 , right parenthesis squared plus left parenthesis, "y" minus 4.2 4 , right parenthesis squared equals "r" squared 有图表。 要进行音频跟踪，按“Alt 键 + T”。x+7.12+y−4.242=r2
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表达式33: left parenthesis, "x" plus 1.9 , right parenthesis squared plus left parenthesis, "y" minus 4.2 6 , right parenthesis squared equals "r" squared 有图表。 要进行音频跟踪，按“Alt 键 + T”。x+1.92+y−4.262=r2
