y=2sin（x+π/12）+√2cos(x+π/3）=2sin（x+π/12）+ √2cos((x+π/12)+π/4)=2sin（x+π/12）+ √2cos(x+π/12)*cosπ/4-√2sin(x+π/12)*sinπ/4=2sin（x+π/12）+ cos(x+π/12)-sin(x+π/12)=sin（x+π/12）+ co...