表达式25: "f" left parenthesis, "x" , right parenthesisfx
25
表达式26: polygon left parenthesis, "A" , "D" , "F" , "E" , right parenthesispolygonA,D,F,E
26
表达式27: polygon left parenthesis, "A" , "E" , "F" , "D" , "F" , "E" , "B" , "C" , right parenthesispolygonA,E,F,D,F,E,B,C
27
表达式28: "y" equals "f" prime left parenthesis, "D" Subscript, 1 , Baseline , right parenthesis left parenthesis, "x" minus "D" Subscript, 1 , Baseline , right parenthesis plus "f" left parenthesis, "D" Subscript, 1 , Baseline , right parenthesisy=f′D1x−D1+fD1
28
表达式29: left parenthesis, 0.2 5cos 45 , left bracket, 0 , "E" Subscript, 2 , Baseline , right bracket plus 0.2 5 "t" sin 45 , right parenthesis0.25cos45,0,E2+0.25tsin45
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
29
表达式30: left parenthesis, 0.2 5 "t" cos 45 , left bracket, 0 , "E" Subscript, 2 , Baseline , right bracket plus 0.2 5sin 45 , right parenthesis0.25tcos45,0,E2+0.25sin45
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
30
表达式31: left parenthesis, left bracket, 0 , "D" Subscript, 1 , Baseline , right bracket plus 0.2 5 "t" cos 45 , 0.2 5sin 45 , right parenthesis0,D1+0.25tcos45,0.25sin45
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
31
表达式32: left parenthesis, left bracket, 0 , "D" Subscript, 1 , Baseline , right bracket plus 0.2 5cos 45 , 0.2 5 "t" sin 45 , right parenthesis0,D1+0.25cos45,0.25tsin45
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
32
Points
对学生隐藏该文件夹。
33
43
技术支持
技术支持
A ( 0 ; 0 )
B ( 0 ; 4 )
C ( 5 ; 0 )
D
E
F
left parenthesis, 2.4 9 3 , 4.9 9 9 9 6 , right parenthesis2.493,4.99996
