表达式3: left parenthesis, "a" left parenthesis, "t" , right parenthesis , "b" left parenthesis, "t" , right parenthesis , right parenthesisat,bt
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
3
表达式4: "d" equals 1d=1
negative 10−10
1010
4
表达式5: left parenthesis, "a" left parenthesis, "t" , right parenthesis , "b" left parenthesis, "t" , right parenthesis plus "d" , right parenthesisat,bt+d
00
定义域t最小值:
less than or equal to "t" less than or equal to≤t≤