Biểu thức 20: "y" equals negative 3 "x" plus 60 left brace, 20 less than or equal to "x" less than or equal to 20.3 , right bracey=−3x+6020≤x≤20.3
20
Biểu thức 21: 2.5 3 left brace, negative 2.5 less than or equal to "x" less than or equal to negative 1.5 , right brace greater than or equal to "y" greater than or equal to 1.4 52.53−2.5≤x≤−1.5≥y≥1.45
21
Biểu thức 22: 2.5 3 left brace, negative 2.5 less than or equal to "x" less than or equal to negative 1.5 , right brace greater than or equal to "y" greater than or equal to 1.4 5 left brace, negative 2.5 less than or equal to "x" less than or equal to negative 1.5 , right brace2.53−2.5≤x≤−1.5≥y≥1.45−2.5≤x≤−1.5
22
Biểu thức 23: 2.5 3 left brace, negative 2.5 less than or equal to "x" less than or equal to negative 1.5 , right brace greater than or equal to "y" greater than or equal to 1.4 5 left brace, negative 2.5 less than or equal to "x" less than or equal to negative 1.5 , right brace2.53−2.5≤x≤−1.5≥y≥1.45−2.5≤x≤−1.5
23
Biểu thức 24: .3 greater than or equal to left parenthesis, "x" minus 20.7 , right parenthesis squared plus left parenthesis, "y" plus 1.2 , right parenthesis squared.3≥x−20.72+y+1.22
24
Biểu thức 25: 60 greater than or equal to 3.6 left parenthesis, "x" minus 10 , right parenthesis squared plus 3.5 left parenthesis, "x" minus 10 , right parenthesis left parenthesis, "y" plus 5 , right parenthesis plus left parenthesis, "y" plus 3 , right parenthesis squared left brace, "y" less than or equal to 2 , right brace60≥3.6x−102+3.5x−10y+5+y+32y≤2
25
Biểu thức 26: 60 greater than or equal to 3.6 left parenthesis, "x" minus 10 , right parenthesis squared plus 3.5 left parenthesis, "x" minus 10 , right parenthesis left parenthesis, "y" plus 5 , right parenthesis plus left parenthesis, "y" plus 3 , right parenthesis squared left brace, "y" less than or equal to 2 , right brace60≥3.6x−102+3.5x−10y+5+y+32y≤2
26
Biểu thức 27: 60 greater than or equal to 3.2 left parenthesis, "x" minus 10 , right parenthesis squared minus 3.4 left parenthesis, "x" minus 10 , right parenthesis left parenthesis, negative "y" minus 6 , right parenthesis plus left parenthesis, negative "y" minus 6 , right parenthesis squared left brace, "y" greater than or equal to 5.3 , right brace60≥3.2x−102−3.4x−10−y−6+−y−62y≥5.3
27
Biểu thức 28: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 1 Over 15 , EndFraction left parenthesis, "x" minus 6 , right parenthesis squared plus 6.8 12+500−x−2245≤y≤−115x−62+6.81
28
Biểu thức 29: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 1 Over 15 , EndFraction left parenthesis, "x" minus 6 , right parenthesis squared plus 6.8 12+500−x−2245≤y≤−115x−62+6.81
29
Biểu thức 30: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 1 Over 15 , EndFraction left parenthesis, "x" minus 6 , right parenthesis squared plus 6.8 12+500−x−2245≤y≤−115x−62+6.81
30
Biểu thức 31: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 1 Over 15 , EndFraction left parenthesis, "x" minus 6 , right parenthesis squared plus 6.8 12+500−x−2245≤y≤−115x−62+6.81
31
Biểu thức 32: 20 greater than or equal to 3 left parenthesis, "x" minus 21 , right parenthesis squared plus 3 left parenthesis, "x" minus 21 , right parenthesis left parenthesis, "y" minus 1 , right parenthesis plus 1.2 left parenthesis, "y" minus 1 , right parenthesis squared left brace, "y" less than or equal to 2 , right brace20≥3x−212+3x−21y−1+1.2y−12y≤2
32
Biểu thức 33: 20 greater than or equal to 3 left parenthesis, "x" minus 21 , right parenthesis squared plus 3 left parenthesis, "x" minus 21 , right parenthesis left parenthesis, "y" minus 1 , right parenthesis plus 1.2 left parenthesis, "y" minus 1 , right parenthesis squared left brace, "y" greater than or equal to 4.5 , right brace20≥3x−212+3x−21y−1+1.2y−12y≥4.5
33
Biểu thức 34: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 2.5 Over 4 , EndFraction left parenthesis, "x" minus 21 , right parenthesis squared plus 92+500−x−2245≤y≤−2.54x−212+9
34
Biểu thức 35: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 2.5 Over 4 , EndFraction left parenthesis, "x" minus 21 , right parenthesis squared plus 92+500−x−2245≤y≤−2.54x−212+9
35
Biểu thức 36: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 2.5 Over 4 , EndFraction left parenthesis, "x" minus 21 , right parenthesis squared plus 92+500−x−2245≤y≤−2.54x−212+9
36
Biểu thức 37: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 2.5 Over 4 , EndFraction left parenthesis, "x" minus 21 , right parenthesis squared plus 92+500−x−2245≤y≤−2.54x−212+9
37
Biểu thức 38: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 2.5 Over 4 , EndFraction left parenthesis, "x" minus 21 , right parenthesis squared plus 92+500−x−2245≤y≤−2.54x−212+9
38
Biểu thức 39: 2 plus StartRoot, StartFraction, left parenthesis, 500 minus left parenthesis, "x" minus 2 , right parenthesis squared , right parenthesis Over 45 , EndFraction , EndRoot less than or equal to "y" less than or equal to negative StartFraction, 2.5 Over 4 , EndFraction left parenthesis, "x" minus 21 , right parenthesis squared plus 92+500−x−2245≤y≤−2.54x−212+9
39
Biểu thức 40:
40
41
cung cấp bởi
cung cấp bởi
"x"x
"y"y
"a" squareda2
"a" Superscript, "b" , Baselineab
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chức năng
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greater than>
44
55
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greater than or equal to≥
11
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piπ
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equals=
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hoặc
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