Question

y=根号2/2cos-根号3的定义域

Answer 1

2cosx-√3≥0 即cosx≥√3/2 解得2kπ-π/6≤x≤2kπ+π/6,k属于Z 故定义域为{x/2kπ-π/6≤x≤2kπ+π/6,k属于Z}