已知a∈R,函数
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.
(Ⅰ)如果函数g(x)=f′(x)是偶函数,求f(x)的极大值和极小值;
(Ⅱ)如果函数f(x)是(-∞,+∞)上的单调函数,求a的取值范围.
考点分析:
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(1)求函数f(x)的最小正周期;
(2)若y=f(x)的图象经过点(
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]上的取值范围.
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已知函数f(x)=log
2(|x+1|+|x-2|-m).
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给出下列命题:
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②函数
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;
③
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;q:f(x)=log
tanαx在(0,+∞)内是增函数,则p是q的充分非必要条件;
④函数
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的奇偶性不能确定.
其中正确命题的序号是
(把你认为的正确命题的序号都填上)
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,则b
2+c
2的取值范围为
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,若
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的最小值为
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