Expression 1: "g" left parenthesis, "x" , right parenthesis equals negative 2cosine left parenthesis, 3 left parenthesis, "x" minus 1 , right parenthesis plus pi , right parenthesis plus 1gx=−2cos3x−1+π+1
1
Expression 2: 2cosine left parenthesis, 3 left parenthesis, "x" minus 1 , right parenthesis , right parenthesis plus 12cos3x−1+1