Question

函數y=的定義域為(    )

A.R                                       B.{x∈R|x≠kπ,k∈Z}

C.［-1,0)∪(0,1]                    D.{x|x≠0}

Answer 1

解析：由sinx≠0,得x≠kπ(k∈Z).

答案：B