名校
解题方法
1 . 设
是定义在
上的奇函数,且对任意
,都有
,当
时,
.
(1)当
时,求
的解析式;
(2)设向量
,
,若
,
同向,求
的值;
(3)若
,
,
,若不等式
有解,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6badf1414c66f33f264d2fd5ca43f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e46371f310e03a153a1698aad9d4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2222b10f3189590dfa35385970ce40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715257c83da5d36ce96caf93244356ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5ffe326b3630c0b860f26597dcccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca718d154417114e49d866bba4c48be.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0345b571f7e0adba412a1899256651e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869d17dff6b5a72789930157ee142655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8323dc838fc738bfb6a0720413efdbef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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