수식 6: "g" left parenthesis, "t" , right parenthesis equals sine left parenthesis, 2 times pi times "f" times "t" , right parenthesis left brace, "t" greater than or equal to 0 , right bracegt=sin2·π·f·tt≥0
6
수식 7: "h" left parenthesis, "t" , right parenthesis equals sine left parenthesis, 2 times pi times "f" times left parenthesis, "t" minus "T" Subscript, "d" , Baseline , right parenthesis , right parenthesis left brace, "t" greater than or equal to 0 , right braceht=sin2·π·f·t−Tdt≥0