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表达式21: "y" equals "m" Subscript, 1 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline
y
=
m
1
x
−
B
1
+
B
2
21
表达式22: "y" equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline
y
=
m
2
x
−
B
1
+
B
2
22
表达式23: "m" Subscript, 1 , Baseline left parenthesis, "A" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline tilde 0
m
1
A
1
−
B
1
+
B
2
~
0
23
表达式24: "A" Subscript, 2 , Baseline equals "m" Subscript, 1 , Baseline left parenthesis, "A" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline
A
2
=
m
1
A
1
−
B
1
+
B
2
equals
=
0
0
24
表达式25: "m" Subscript, 2 , Baseline left parenthesis, "C" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline tilde 0
m
2
C
1
−
B
1
+
B
2
~
0
25
表达式26: "C" Subscript, 2 , Baseline equals "m" Subscript, 2 , Baseline left parenthesis, "C" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline
C
2
=
m
2
C
1
−
B
1
+
B
2
equals
=
0
0
26
Graphs
Graphs
对学生隐藏该文件夹。
27
表达式28: polygon left parenthesis, "A" , "B" , "C" , right parenthesis
p
o
l
y
g
o
n
A
,
B
,
C
28
表达式29: left parenthesis, "s" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "s" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesis
s
1
+
R
1
c
o
s
t
,
s
2
+
R
1
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
29
表达式30: left parenthesis, "s" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "s" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesis
s
1
+
R
1
c
o
s
t
,
s
2
+
R
1
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
30
表达式31: left parenthesis, "S" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline cos "t" , "S" Subscript, 2 , Baseline plus "R" Subscript, 2 , Baseline sin "t" , right parenthesis
S
1
+
R
2
c
o
s
t
,
S
2
+
R
2
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
31
表达式32: left parenthesis, "S" Subscript, 1 , Baseline plus "R" Subscript, 2 , Baseline cos "t" , "S" Subscript, 2 , Baseline plus "R" Subscript, 2 , Baseline sin "t" , right parenthesis
S
1
+
R
2
c
o
s
t
,
S
2
+
R
2
s
i
n
t
0
0
定义域t最小值：
less than or equal to "t" less than or equal to
≤
t
≤
定义域t最大值： 360
3
6
0
32
表达式33: polygon left parenthesis, "B" , "S" , right parenthesis
p
o
l
y
g
o
n
B
,
S
33
表达式34: polygon left parenthesis, "A" , "S" , right parenthesis
p
o
l
y
g
o
n
A
,
S
34
表达式35: polygon left parenthesis, "P" , "S" , right parenthesis
p
o
l
y
g
o
n
P
,
S
35
表达式36: polygon left parenthesis, "B" , "O" , right parenthesis
p
o
l
y
g
o
n
B
,
O
36
表达式37: polygon left parenthesis, "B" , "s" , right parenthesis
p
o
l
y
g
o
n
B
,
s
37
表达式38: polygon left parenthesis, "Q" , "s" , right parenthesis
p
o
l
y
g
o
n
Q
,
s
38
表达式39: polygon left parenthesis, "C" , "s" , right parenthesis
p
o
l
y
g
o
n
C
,
s
39
表达式40: "R" Subscript, 1 , Baseline equals StartRoot, 1 , EndRoot
R
1
=
1
equals
=
1
1
40
表达式41: "R" Subscript, 2 , Baseline equals 3 halves
R
2
=
3
2
equals
=
1.5
1
.
5
41
Points
Points
对学生隐藏该文件夹。
42
52
技术支持
技术支持
O
A
B
C
s
P
Q
S
"x"
x
"y"
y
"a" squared
a
2
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
功能
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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