式13: "y" equals StartRoot, 3 squared minus left parenthesis, "x" plus 5 , right parenthesis squared , EndRoot plus 22 left brace, negative 2.0 8 greater than "x" , right bracey=32−x+52+22−2.08>x
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式14: "y" equals 2cosine left parenthesis, 7 "x" , right parenthesis plus 11 left brace, negative 17.4 less than "x" less than negative 16 , right bracey=2cos7x+11−17.4<x<−16
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式15: "y" equals 2cosine left parenthesis, 7 "x" , right parenthesis plus 11 left brace, 2.1 less than "x" less than 3.5 , right bracey=2cos7x+112.1<x<3.5
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式16: "x" equals negative StartRoot, 2 squared minus left parenthesis, "y" minus 10 , right parenthesis squared , EndRoot minus 17x=−22−y−102−17
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式17: "x" equals StartRoot, 2 squared minus left parenthesis, "y" minus 10 , right parenthesis squared , EndRoot plus 3x=22−y−102+3
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式18: left parenthesis, "x" minus 6 , right parenthesis squared plus left parenthesis, "y" minus 18 , right parenthesis squared equals 1 squaredx−62+y−182=12
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式19: left parenthesis, "x" minus 9 , right parenthesis squared plus left parenthesis, "y" minus 21 , right parenthesis squared equals 1.5 squaredx−92+y−212=1.52
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式20: left parenthesis, "x" minus 13 , right parenthesis squared plus left parenthesis, "y" minus 24 , right parenthesis squared equals 2 squaredx−132+y−242=22
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式21: "x" equals 21 left brace, 25 less than "y" less than 35 , right bracex=2125<y<35
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式22: "x" equals StartRoot, 5 squared minus left parenthesis, "y" minus 30 , right parenthesis squared , EndRoot plus 21x=52−y−302+21