表达式4: left parenthesis, ln left parenthesis, 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis , "E" left parenthesis, 1 plus floor left parenthesis, "t" , right parenthesis , 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis , right parenthesisln1+15modt,1,E1+floort,1+15modt,1
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 3232
4
表达式5: left parenthesis, ln left parenthesis, 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis plus .0 0 7cos left parenthesis, 3000 "t" , right parenthesis , StartFraction, 1 Over 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , EndFraction plus .0 0 7sin left parenthesis, 3000 "t" , right parenthesis , right parenthesisln1+15modt,1+.007cos3000t,11+15modt,1+.007sin3000t
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 3232
5
表达式6: left parenthesis, ln left parenthesis, 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis , "E" left parenthesis, 1 , 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis plus .0 0 5 , right parenthesisln1+15modt,1,E1,1+15modt,1+.005
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 3232
6
表达式7: left parenthesis, ln left parenthesis, 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis , "E" left parenthesis, 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , left parenthesis, 1 plus floor left parenthesis, "t" , right parenthesis , right parenthesis left parenthesis, 1 plus 15mod left parenthesis, "t" , 1 , right parenthesis , right parenthesis , right parenthesis , right parenthesisln1+15modt,1,E1+15modt,1,1+floort1+15modt,1
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
