函数y=2sinx的单调增区间是()
A.[2kπ-π/2,2kπ+π/2](k∈Z) B.[2kπ+π/2,2kπ+3π/2](k∈Z) C.[2kπ-π,2kπ](k∈Z) D.[2kπ,2kπ+π](k∈Z)正确答案A
函数y=2sinx的单调增区间是()
A.[2kπ-π/2,2kπ+π/2](k∈Z) B.[2kπ+π/2,2kπ+3π/2](k∈Z) C.[2kπ-π,2kπ](k∈Z) D.[2kπ,2kπ+π](k∈Z)正确答案A
