表达式11: "w" Subscript, "m" , Baseline equals 2 times pi times "f" Subscript, "m" , Baselinewm=2·π·fm
equals=
46.4 9 5 5 7 1 2 7 3 146.4955712731
11
表达式12: "f" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis equals "J" left parenthesis, 0 , "k" Subscript, "f" , Baseline , right parenthesis plus 2 times "J" left parenthesis, 2 , "k" Subscript, "f" , Baseline , right parenthesis times cosine left parenthesis, 2 times "w" Subscript, "m" , Baseline times "t" , right parenthesis plus 2 times "J" left parenthesis, 4 , "k" Subscript, "f" , Baseline , right parenthesis times cosine left parenthesis, 4 times "w" Subscript, "m" , Baseline "t" , right parenthesis plus 2 times "J" left parenthesis, 6 , "k" Subscript, "f" , Baseline , right parenthesis times cosine left parenthesis, 6 times "w" Subscript, "m" , Baseline "t" , right parenthesis left brace, "t" greater than 0 , right bracef1t=J0,kf+2·J2,kf·cos2·wm·t+2·J4,kf·cos4·wmt+2·J6,kf·cos6·wmtt>0
12
表达式13: "f" Subscript, 2 , Baseline left parenthesis, "t" , right parenthesis equals 2 times "J" left parenthesis, 1 , "k" Subscript, "f" , Baseline , right parenthesis times sine left parenthesis, "w" Subscript, "m" , Baseline times "t" , right parenthesis plus 2 times "J" left parenthesis, 3 , "k" Subscript, "f" , Baseline , right parenthesis times sine left parenthesis, 3 times "w" Subscript, "m" , Baseline "t" , right parenthesis plus 2 times "J" left parenthesis, 5 , "k" Subscript, "f" , Baseline , right parenthesis times sine left parenthesis, 5 times "w" Subscript, "m" , Baseline "t" , right parenthesis plus 2 times "J" left parenthesis, 7 , "k" Subscript, "f" , Baseline , right parenthesis times sine left parenthesis, 7 times "w" Subscript, "m" , Baseline "t" , right parenthesis left brace, "t" greater than 0 , right bracef2t=2·J1,kf·sinwm·t+2·J3,kf·sin3·wmt+2·J5,kf·sin5·wmt+2·J7,kf·sin7·wmtt>0
13
表达式14: "f" Subscript, 3 , Baseline left parenthesis, "t" , right parenthesis equals "J" left parenthesis, 0 , 2 , right parenthesis plus 2 times "J" left parenthesis, 2 , 2 , right parenthesis times cosine left parenthesis, 2 times "w" Subscript, "m" , Baseline times "t" , right parenthesis plus 2 times "J" left parenthesis, 4 , 2 , right parenthesis times cosine left parenthesis, 4 times "w" Subscript, "m" , Baseline "t" , right parenthesis plus 2 times "J" left parenthesis, 6 , 2 , right parenthesis times cosine left parenthesis, 6 times "w" Subscript, "m" , Baseline "t" , right parenthesis left brace, "t" greater than 0 , right bracef3t=J0,2+2·J2,2·cos2·wm·t+2·J4,2·cos4·wmt+2·J6,2·cos6·wmtt>0
14
表达式15: "f" Subscript, 4 , Baseline left parenthesis, "t" , right parenthesis equals 2 times "J" left parenthesis, 1 , 2 , right parenthesis times sine left parenthesis, "w" Subscript, "m" , Baseline times "t" , right parenthesis plus 2 times "J" left parenthesis, 3 , 2 , right parenthesis times sine left parenthesis, 3 times "w" Subscript, "m" , Baseline "t" , right parenthesis plus 2 times "J" left parenthesis, 5 , 2 , right parenthesis times sine left parenthesis, 5 times "w" Subscript, "m" , Baseline "t" , right parenthesis plus 2 times "J" left parenthesis, 7 , 2 , right parenthesis times sine left parenthesis, 7 times "w" Subscript, "m" , Baseline "t" , right parenthesis left brace, "t" greater than 0 , right bracef4t=2·J1,2·sinwm·t+2·J3,2·sin3·wmt+2·J5,2·sin5·wmt+2·J7,2·sin7·wmtt>0
表达式18: "w" Subscript, "c" , Baseline equals 2 times pi times "f" Subscript, "c" , Baselinewc=2·π·fc
equals=
628.3 1 8 5 3 0 7 1 8628.318530718
18
表达式19: "s" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis equals cosine left parenthesis, "w" Subscript, "c" , Baseline "t" , right parenthesis times "f" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis minus sine left parenthesis, "w" Subscript, "c" , Baseline "t" , right parenthesis times "f" Subscript, 2 , Baseline left parenthesis, "t" , right parenthesis left brace, "t" greater than 0 , right braces1t=coswct·f1t−sinwct·f2tt>0
19
表达式20: "s" Subscript, 2 , Baseline left parenthesis, "t" , right parenthesis equals cosine left parenthesis, "w" Subscript, "c" , Baseline "t" , right parenthesis times "f" Subscript, 3 , Baseline left parenthesis, "t" , right parenthesis minus sine left parenthesis, "w" Subscript, "c" , Baseline "t" , right parenthesis times "f" Subscript, 4 , Baseline left parenthesis, "t" , right parenthesis left brace, "t" greater than 0 , right braces2t=coswct·f3t−sinwct·f4tt>0
