式11: "y" equals negative 1 third left parenthesis, "x" , right parenthesis squared minus 3.4 left brace, 1.3 7 3 greater than "x" greater than negative 1.3 7 3 , right bracey=−13x2−3.41.373>x>−1.373
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式12: StartFraction, left parenthesis, "x" , right parenthesis squared Over 1 , EndFraction plus StartFraction, left parenthesis, "y" minus .6 , right parenthesis squared Over 1.5 , EndFraction equals 38x21+y−.621.5=38
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式13: StartFraction, left parenthesis, "x" , right parenthesis squared Over .1 9 , EndFraction minus StartFraction, left parenthesis, "y" minus 6.1 , right parenthesis squared Over .6 , EndFraction equals 35 left brace, 0 less than "y" less than 7.1 , right bracex2.19−y−6.12.6=350<y<7.1
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式14: left parenthesis, "x" minus 6.5 , right parenthesis squared plus left parenthesis, "y" minus 7.5 , right parenthesis squared equals 15x−6.52+y−7.52=15
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式15: left parenthesis, "x" plus 6.5 , right parenthesis squared plus left parenthesis, "y" minus 7.5 , right parenthesis squared equals 15x+6.52+y−7.52=15
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式16: "y" equals 1 quarter left parenthesis, "x" , right parenthesis squared minus 5.6 5 left brace, negative 2.1 2 3 less than "x" less than 2.1 2 3 , right bracey=14x2−5.65−2.123<x<2.123
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式17: "y" equals negative 1 third left parenthesis, "x" minus 2 , right parenthesis squared plus 7.6 left brace, 0 less than "x" less than 5.5 , right bracey=−13x−22+7.60<x<5.5
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式18: "y" equals negative 1 third left parenthesis, "x" plus 2 , right parenthesis squared plus 7.6 left brace, 0 greater than "x" greater than negative 5.5 , right bracey=−13x+22+7.60>x>−5.5
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式19: "y" equals 4 "x" plus 17.6 left brace, negative 2.5 less than "x" less than 0 , right bracey=4x+17.6−2.5<x<0
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式20: "y" equals negative 4 "x" plus 17.6 left brace, 0 less than "x" less than 2.5 , right bracey=−4x+17.60<x<2.5
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式21: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" minus 19 , right parenthesis squared equals 2x2+y−192=2