表达式4: left parenthesis, "n" times "v" Subscript, 1 , Baseline plus "v" Subscript, 2 , Baseline left parenthesis, "T" minus "n" , right parenthesis cos left parenthesis, "t" , right parenthesis , "v" Subscript, 2 , Baseline left parenthesis, "T" minus "n" , right parenthesis sin left parenthesis, "t" , right parenthesis , right parenthesis left brace, "T" greater than "n" , right bracen·v1+v2T−ncost,v2T−nsintT>n
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： 2 pi2π
4
表达式5: "n" equals left bracket, 0 , 1 , 2 , 3 , 4 , 5 , 6 , right bracketn=0,1,2,3,4,5,6
7个元素列表
5
隐藏 标签 left parenthesis, "v" Subscript, 1 , Baseline times "T" , 0 , right parenthesisv1·T,0
标签
equals=
left parenthesis, 0.5 4 4 5 , 0 , right parenthesis0.5445,0
