運算式 6: left parenthesis, 2 "t" sin left parenthesis, 45 , right parenthesis , negative 2 "t" cos left parenthesis, 45 , right parenthesis , right parenthesis2tsin45,−2tcos45
00
定義域 t 最小值：
less than or equal to "t" less than or equal to≤t≤
11
定義域 t 最大值：
6
運算式 7: left parenthesis, negative 2 "t" sin left parenthesis, 45 , right parenthesis , negative 2 "t" cos left parenthesis, 45 , right parenthesis , right parenthesis−2tsin45,−2tcos45
00
定義域 t 最小值：
less than or equal to "t" less than or equal to≤t≤
11
定義域 t 最大值：
7
運算式 8: left parenthesis, negative 2 "t" sin left parenthesis, 45 , right parenthesis , 2 "t" cos left parenthesis, 45 , right parenthesis , right parenthesis−2tsin45,2tcos45
00
定義域 t 最小值：
less than or equal to "t" less than or equal to≤t≤
11
定義域 t 最大值：
8
運算式 9: left parenthesis, negative 2 "t" sin left parenthesis, 270 "t" , right parenthesis , 2 "t" cos left parenthesis, 135 "t" , right parenthesis , right parenthesis−2tsin270t,2tcos135t
00
定義域 t 最小值：
less than or equal to "t" less than or equal to≤t≤
11
定義域 t 最大值：
9
運算式 10: left parenthesis, negative 2 "t" sin left parenthesis, 270 "t" , right parenthesis , negative 2 "t" cos left parenthesis, 135 "t" , right parenthesis , right parenthesis−2tsin270t,−2tcos135t
00
定義域 t 最小值：
less than or equal to "t" less than or equal to≤t≤
11
定義域 t 最大值：
10
運算式 11: left parenthesis, negative 2 "t" "t" Subscript, 1 , Baseline sin left parenthesis, 270 "t" "t" Subscript, 1 , Baseline , right parenthesis , negative 2 "t" "t" Subscript, 1 , Baseline cos left parenthesis, 135 "t" "t" Subscript, 1 , Baseline , right parenthesis , right parenthesis−2tt1sin270tt1,−2tt1cos135tt1
00
定義域 t 最小值：
less than or equal to "t" less than or equal to≤t≤
