表达式4: left parenthesis, 2 plus "R" left parenthesis, "t" , 0 , right parenthesis plus .0 2cos left parenthesis, 2 pi "t" , right parenthesis , "R" left parenthesis, "t" , 1 , right parenthesis plus .0 2sin left parenthesis, 2 pi "t" , right parenthesis , right parenthesis2+Rt,0+.02cos2πt,Rt,1+.02sin2πt
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： 10001000
4
表达式5: negative 2.5 plus "R" left parenthesis, 100 "x" , "v" , right parenthesis−2.5+R100x,v
5
表达式6: "v" equals negative 3.4v=−3.4
negative 10−10
1010
6
表达式7: left parenthesis, negative 2 plus "R" left parenthesis, "t" , 0 , right parenthesis plus .0 2cos left parenthesis, 2 pi "t" , right parenthesis , mod left parenthesis, 1 plus "R" left parenthesis, "t" , 1 , right parenthesis plus "T" left parenthesis, 1.2 plus "R" left parenthesis, "t" , 2 , right parenthesis , right parenthesis , 2 , right parenthesis minus 1 plus .0 2sin left parenthesis, 2 pi "t" , right parenthesis , right parenthesis−2+Rt,0+.02cos2πt,mod1+Rt,1+T1.2+Rt,2,2−1+.02sin2πt
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
