運算式 9: 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
定義域 t 最小值： negative 100−100
less than or equal to "t" less than or equal to≤t≤
定義域 t 最大值： 100100
9
運算式 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
定義域 t 最小值： negative 100−100
less than or equal to "t" less than or equal to≤t≤
