题目内容
(本小题满分12分)
设函数
，已知
是奇函数．
（1）求b、c的值；
（2）求
的单调区间与极值．
【答案】
解：(1) ∵ 
······································································ 1分
∴ 
················································ 3分
∵ 
是奇函数 ∴ 
恒成立
即 
∴ 
∴ 
············································································ 7分
(2) ∵ 
∴ 
由
由
∴ 
的递增区间为
······················································ 11分
的递减区间为
············································································· 13分
【解析】略
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