Expressão 3: cosine left parenthesis, "x" , right parenthesiscosx
3
Expressão 4: cosine left parenthesis, "x" minus StartFraction, 2 pi Over "Q" , EndFraction , right parenthesiscosx−2πQ
4
Expressão 5: "f" left parenthesis, "x" , right parenthesis equals 3cosine left parenthesis, "x" , right parenthesisfx=3cosx
5
Expressão 6: "g" left parenthesis, "x" , right parenthesis equals cosine left parenthesis, "x" minus StartFraction, 2 pi Over "Q" , EndFraction , right parenthesis plus cosine left parenthesis, "x" , right parenthesis plus cosine left parenthesis, "x" plus StartFraction, 2 pi Over "Q" , EndFraction , right parenthesisgx=cosx−2πQ+cosx+cosx+2πQ