表达式19: "y" equals negative 60 left brace, 15 less than "x" less than 35 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−6015<x<35
19
表达式20: "y" equals "x" plus 5 left brace, negative 40 less than "x" less than 0 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=x+5−40<x<0
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表达式21: "y" equals negative "x" plus 5 left brace, 0 less than "x" less than 40 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−x+50<x<40
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表达式22: left parenthesis, "x" plus 4 , right parenthesis squared plus left parenthesis, "y" plus 70 , right parenthesis squared equals 1 squared 有图表。 要进行音频跟踪，按“Alt 键 + T”。x+42+y+702=12
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表达式23: sine left parenthesis, 3 "x" plus "c" , right parenthesis minus 81 有图表。 要进行音频跟踪，按“Alt 键 + T”。sin3x+c−81
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表达式24: "c" equals 6.9 7c=6.97
negative 10−10
1010
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表达式25: "x" squared positive left parenthesis, "y" plus 22 , right parenthesis squared equals "r" 有图表。 要进行音频跟踪，按“Alt 键 + T”。x2+y+222=r
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表达式26: "r" equals 40r=40
negative 10−10
4040
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表达式27: "y" equals negative 22 left brace, negative 6.3 less than "x" less than 6.3 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−22−6.3<x<6.3
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表达式28: "x" equals 0 left brace, negative 28.3 less than "y" less than negative 15.7 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=0−28.3<y<−15.7
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表达式29: "x" equals negative 5 left brace, negative 55 less than "y" less than negative 45 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=−5−55<y<−45
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表达式30: "y" equals negative 45 left brace, negative 5 less than "x" less than negative 1 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−45−5<x<−1
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表达式31: "x" equals negative 1 left brace, negative 49 less than "y" less than negative 45 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=−1−49<y<−45
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表达式32: "y" equals negative 49 left brace, negative 5 less than "x" less than negative 1 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−49−5<x<−1
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表达式33: "x" equals 1 left brace, negative 55 less than "y" less than negative 45 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x=1−55<y<−45
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表达式34: "y" equals negative 45 left brace, 1 less than "x" less than 6 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−451<x<6
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表达式35: "y" equals negative 49 left brace, 1 less than "x" less than 4 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。y=−491<x<4
35
表达式36: "x" squared plus "b" "x" plus "c" "x" left brace, negative 5 less than "x" less than 0 , right brace 有图表。 要进行音频跟踪，按“Alt 键 + T”。x2+bx+cx−5<x<0
