题目

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(2011·黑龙江哈三中10月考)Education is a lifelong process, _____ process that starts long before ____ start of school, and one that should be _____ necessary part of one’s entire life.    A. a; a ; a                         B. a; the; a              C. the; a; the                  D. the; the; the          
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