表达式21: left parenthesis, "L" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "L" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesisL1+R1cost,L2+R1sint
00
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： 360360
21
表达式22: left parenthesis, "N" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "N" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesisN1+R1cost,N2+R1sint
00
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： 360360
22
表达式23: left parenthesis, "M" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "M" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesisM1+R1cost,M2+R1sint
00
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： 360360
23
表达式24: left parenthesis, "L" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "L" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesisL1+R1cost,L2+R1sint
00
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： 360360
24
表达式25: left parenthesis, "N" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "N" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesisN1+R1cost,N2+R1sint
00
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： 360360
25
表达式26: left parenthesis, "M" Subscript, 1 , Baseline plus "R" Subscript, 1 , Baseline cos "t" , "M" Subscript, 2 , Baseline plus "R" Subscript, 1 , Baseline sin "t" , right parenthesisM1+R1cost,M2+R1sint
00
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： 360360
26
表达式27: left parenthesis, "R" cos "t" , "R" sin "t" , right parenthesisRcost,Rsint
00
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： 9090
27
表达式28: polygon left parenthesis, "A" , "C" , right parenthesispolygonA,C
28
表达式29: polygon left parenthesis, "A" , "B" , right parenthesispolygonA,B
