函数 (1)求函数的最小正周期;      (2)若存在,使不等式成

函数

(1)求函数的最小正周期;     

(2)若存在,使不等式成立,求函数的取值范围

答案

(1)  (2)


解析:

(1)

-----5分

∴最小正周期                                       --------6分

(2)                           -------8分

                   ------10分

,使成立                   -----12分

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