Expression 3: sine left parenthesis, "x" , right parenthesissinx
3
Expression 4: cosine left parenthesis, mod left parenthesis, "x" plus StartFraction, pi Over 4 , EndFraction , StartFraction, pi Over 2 , EndFraction , right parenthesis minus StartFraction, pi Over 4 , EndFraction , right parenthesiscosmodx+π4,π2−π4
4
Expression 5: sine left parenthesis, mod left parenthesis, "x" plus StartFraction, pi Over 4 , EndFraction , StartFraction, pi Over 2 , EndFraction , right parenthesis plus StartFraction, pi Over 4 , EndFraction , right parenthesissinmodx+π4,π2+π4