设
.
(1)在下列直角坐标系中画出
的图象;
![](https://img.xkw.com/dksih/QBM/2018/1/5/1853869803503616/1855322136109056/STEM/e9d1970c02654b0e91caadee42e5bafd.png?resizew=235)
(2)用单调性定义证明该函数在
上为单调递增函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c73107fafcdac76cb84bad2f9ee3255.png)
(1)在下列直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/2018/1/5/1853869803503616/1855322136109056/STEM/e9d1970c02654b0e91caadee42e5bafd.png?resizew=235)
(2)用单调性定义证明该函数在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e0400d730672ae2110ff48786dd1d.png)
更新时间:2018-01-07 16:45:27
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适中
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解题方法
【推荐1】已知函数
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7ab0de4ae17e98fa70627b48f519f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)若,判断并证明函数
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(2)若,用定义证明:函数
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)上是增函数.
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解答题-证明题
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【推荐2】若定义在R上的函数
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,
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(1)求证:
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(2)求证:
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(3)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33890c6b0bf167514d44139d9dca0154.png)
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(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5485dbf2af203775f17c47d00595c3.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f832d9cca2d5c9d76d38374e2a258d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9e7a4af65844b19fd5d5a71017eaf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2b3de4cf642f247a9aa1cb56f57f51.png)
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【推荐3】已知定义域为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c4a4aec8141e560e81112bd3f3506d.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
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(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24aa16b780156e18f12baa2b8ee0f9a5.png)
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您最近一年使用:0次
解答题-作图题
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【推荐1】已知函数
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![](https://img.xkw.com/dksih/QBM/2022/5/18/2982116605796352/2982316965683200/STEM/d945b7b9-d260-4e68-8bfd-18997f8292d7.png?resizew=459)
(1)在给出的平面直角坐标系中画出
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(2)若关于x的不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27603aaa35a185c50f46b5fa65a754d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58a086b816e9b48072d3c6a7567d087.png)
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(1)在给出的平面直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2611b565b7b59630fdd46ad820573221.png)
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解答题-作图题
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【推荐2】函数
是定义在R上的奇函数,当
时,
.
(1)求函数
在R上的解析式;
(2)在坐标系里画出函数
的图象,并写出函数的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56785f54453abeb59d7cbd09bfb4ec7f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在坐标系里画出函数
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/59ba868a-1659-4b0f-8780-d3a2edf808ea.png?resizew=239)
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