(1)原式=sinπ/6cosx+cosπ/6sinx=sin(x+π/6)∴最大值为1,最小值为-1,周期为2π(2)原式=√2(√2/2sinx+√2/2cosx)=√2(cosπ/4six+sinπ/4cosx)=√2sin(x+π/4)∴最大值为√2,最小值为-√2,周期为2π(3)原式=2(√3/...