表达式7: left parenthesis, "t" , "b" , right parenthesist,b
定义域t最小值： negative 100−100
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 100100
7
表达式8: left parenthesis, cos left parenthesis, "t" , right parenthesis cosh left parenthesis, "b" , right parenthesis , negative sin left parenthesis, "t" , right parenthesis sinh left parenthesis, "b" , right parenthesis , right parenthesiscostcoshb,−sintsinhb
定义域t最小值： negative 100−100
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 100100
8
表达式9: left parenthesis, "a" , "t" , right parenthesisa,t
定义域t最小值： negative 100−100
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 100100
9
表达式10: left parenthesis, cos left parenthesis, "a" , right parenthesis cosh left parenthesis, "t" , right parenthesis , negative sin left parenthesis, "a" , right parenthesis sinh left parenthesis, "t" , right parenthesis , right parenthesiscosacosht,−sinasinht
定义域t最小值： negative 100−100
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 100100
10
隐藏 标签 left parenthesis, "a" , "b" , right parenthesisa,b
标签
equals=
left parenthesis, 2.8 2 , 1.1 3 , right parenthesis2.82,1.13
11
隐藏 标签 left parenthesis, cos left parenthesis, "a" , right parenthesis cosh left parenthesis, "b" , right parenthesis , negative sin left parenthesis, "a" , right parenthesis sinh left parenthesis, "b" , right parenthesis , right parenthesiscosacoshb,−sinasinhb
