1)y=根号3sinx+cosx=2(√3/2sinx+1/2cosx)=2sin(x+π/6)周期T=2π, 最大值=2,递增区间2Kπ-π/22Kπ-2π/3递减区间2Kπ+π/22Kπ+π/3递增区间(2Kπ-2π/3, 2Kπ+π/3)递减区间(2Kπ+π/3, 2Kπ+4π/3)2)y=根号3sinx-cosx=2sin(x-π/6)周期T=2π, 最大值=2递增区间2Kπ-π/22Kπ-π/3递减区间2Kπ+π/2递增区间(2Kπ-π/3, 2Kπ+2π/3)递减区间(2Kπ+2π/3, 2Kπ+5π/3)