表达式21: "y" Subscript, 31 , Baseline equals "x" Subscript, 3 , Baseline sine left parenthesis, "A" , right parenthesis plus "y" Subscript, 3 , Baseline cosine left parenthesis, "A" , right parenthesisy31=x3sinA+y3cosA
equals=
negative 7.4 0 4 9 7 9 3 2 4 2 8−7.40497932428
21
表达式22: "y" Subscript, 32 , Baseline equals "x" Subscript, 3 , Baseline sine left parenthesis, negative "A" , right parenthesis plus "y" Subscript, 3 , Baseline cosine left parenthesis, negative "A" , right parenthesisy32=x3sin−A+y3cos−A
equals=
0.9 3 0 9 2 1 1 2 1 2 30.93092112123
22
表达式23: "y" Subscript, 41 , Baseline equals "x" Subscript, 4 , Baseline sine left parenthesis, "A" , right parenthesis plus "y" Subscript, 4 , Baseline cosine left parenthesis, "A" , right parenthesisy41=x4sinA+y4cosA
equals=
0.9 3 0 9 2 1 1 2 1 2 30.93092112123
23
表达式24: "y" Subscript, 42 , Baseline equals "x" Subscript, 4 , Baseline sine left parenthesis, negative "A" , right parenthesis plus "y" Subscript, 4 , Baseline cosine left parenthesis, negative "A" , right parenthesisy42=x4sin−A+y4cos−A
equals=
negative 7.4 0 4 9 7 9 3 2 4 2 8−7.40497932428
24
表达式25: "A" equals 44A=44
00
8989
25
表达式26: left parenthesis, "y" minus "y" Subscript, 11 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 11 , Baseline minus "y" Subscript, 21 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 11 , Baseline minus "x" Subscript, 21 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 11 , Baseline , right parenthesis left brace, "x" Subscript, 11 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 21 , Baseline , right bracey−y11=y11−y21x11−x21x−x11x11≤x≤x21
26
表达式27: left parenthesis, "y" minus "y" Subscript, 12 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 12 , Baseline minus "y" Subscript, 22 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 12 , Baseline minus "x" Subscript, 22 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 12 , Baseline , right parenthesis left brace, "x" Subscript, 12 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 22 , Baseline , right bracey−y12=y12−y22x12−x22x−x12x12≤x≤x22
27
表达式28: left parenthesis, "y" minus "y" Subscript, 1 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 1 , Baseline minus "y" Subscript, 2 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 1 , Baseline minus "x" Subscript, 2 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 1 , Baseline , right parenthesis left brace, negative 6 less than or equal to "x" less than or equal to 6 , right bracey−y1=y1−y2x1−x2x−x1−6≤x≤6
28
表达式29: left parenthesis, "y" minus "y" Subscript, 21 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 21 , Baseline minus "y" Subscript, 41 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 21 , Baseline minus "x" Subscript, 41 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 21 , Baseline , right parenthesis left brace, "x" Subscript, 21 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 41 , Baseline , right bracey−y21=y21−y41x21−x41x−x21x21≤x≤x41
29
表达式30: left parenthesis, "y" minus "y" Subscript, 22 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 22 , Baseline minus "y" Subscript, 42 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 22 , Baseline minus "x" Subscript, 42 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 22 , Baseline , right parenthesis left brace, "x" Subscript, 42 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 22 , Baseline , right bracey−y22=y22−y42x22−x42x−x22x42≤x≤x22
30
表达式31: "x" equals "x" Subscript, 2 , Baseline left brace, negative 4.5 less than or equal to "y" less than or equal to 4.5 , right bracex=x2−4.5≤y≤4.5
31
表达式32: left parenthesis, "y" minus "y" Subscript, 31 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 31 , Baseline minus "y" Subscript, 41 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 31 , Baseline minus "x" Subscript, 41 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 31 , Baseline , right parenthesis left brace, "x" Subscript, 31 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 41 , Baseline , right bracey−y31=y31−y41x31−x41x−x31x31≤x≤x41
32
表达式33: left parenthesis, "y" minus "y" Subscript, 32 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 32 , Baseline minus "y" Subscript, 42 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 32 , Baseline minus "x" Subscript, 42 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 32 , Baseline , right parenthesis left brace, "x" Subscript, 11 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 21 , Baseline , right bracey−y32=y32−y42x32−x42x−x32x11≤x≤x21
33
表达式34: "y" equals "y" Subscript, 3 , Baseline plus StartFraction, left parenthesis, "y" Subscript, 3 , Baseline minus "y" Subscript, 4 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 3 , Baseline minus "x" Subscript, 4 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 3 , Baseline , right parenthesis left brace, negative 6 less than or equal to "x" less than or equal to 6 , right bracey=y3+y3−y4x3−x4x−x3−6≤x≤6
34
表达式35: left parenthesis, "y" minus "y" Subscript, 31 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 11 , Baseline minus "y" Subscript, 31 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 11 , Baseline minus "x" Subscript, 31 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 31 , Baseline , right parenthesis left brace, "x" Subscript, 11 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 31 , Baseline , right bracey−y31=y11−y31x11−x31x−x31x11≤x≤x31
35
表达式36: left parenthesis, "y" minus "y" Subscript, 32 , Baseline , right parenthesis equals StartFraction, left parenthesis, "y" Subscript, 12 , Baseline minus "y" Subscript, 32 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 12 , Baseline minus "x" Subscript, 32 , Baseline , right parenthesis , EndFraction left parenthesis, "x" minus "x" Subscript, 32 , Baseline , right parenthesis left brace, "x" Subscript, 32 , Baseline less than or equal to "x" less than or equal to "x" Subscript, 12 , Baseline , right bracey−y32=y12−y32x12−x32x−x32x32≤x≤x12
36
表达式37: "x" equals "x" Subscript, 1 , Baseline left brace, negative 4.5 less than or equal to "y" less than or equal to 4.5 , right bracex=x1−4.5≤y≤4.5
37
表达式38: "x" squared plus "y" squared equals 20 squaredx2+y2=202
38
表达式39: "y" equals "x" tangent left parenthesis, "A" , right parenthesis left brace, 0 less than or equal to "y" , right bracey=xtanA0≤y
39
表达式40: "y" equals "x" tangent left parenthesis, negative "A" , right parenthesis left brace, 0 less than or equal to "y" , right bracey=xtan−A0≤y
40
表达式41: "x" equals 0 left brace, 0 less than or equal to "y" , right bracex=00≤y
