已知函数
,
且
.
(1)求
的定义域并判断
的奇偶性并证明;
(2)当
时,求使
的
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0efdae264598a18ebb6314e13fac33c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
更新时间:2023-02-03 18:27:43
|
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【推荐2】(1)已知集合
,函数
的定义域为
.若
,求实数
的值;
(2)函数
定义在
上且
,当
时,
.若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a655b69b06d3eefc7731eaec03964a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffae399d2df87758d7299772364e1678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afcd766fa2b5579ce4159914cedae12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95d021f19fbafcf380478fdef49589e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78385a1311e9cf0b5340c105eaa1852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffae399d2df87758d7299772364e1678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68abe3a7ed866e1fa7d1aeaf047995d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐1】已知函数
,
,且当
时,
.
(1)若函数
是偶函数,求
;
(2)
是否可能是奇函数?若可能,求
的表达式;若不可能,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56b5735bcfc4d041020faefa5bbbf98.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109dde9fdf7b26d48a8eee68fc9e7d46.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐2】求出下列函数的定义域,并判断函数的奇偶性:
(1)
;(2)
;
(3)
;(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ec08df76e656f6122b5424b806634c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3b30943dda4b26400f9c3505cf251a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7a21e6a09a09ece3c3ca4995c586c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa3c5bbd486dc07e2af3cadc9652fda.png)
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名校
解题方法
【推荐1】已知函数
是定义在R上的增函数,并且满足
.
(1)求
的值;
(2)判断函数
的奇偶性;
(3)若
,求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440d093c9d93806c13d9ff82790127ee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a77c4d65f01e583b2f6c5ea97c3e5a.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1459fb021363b9589941838e6bae38.png)
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解题方法
【推荐2】已知函数
,
,且
.
(1)证明函数
在
上单调递增;
(2)若实数
满足
,试确定
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c75128a33a5fc125c9c6806dd8f6c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97148e04ca6a9f9dca0aba91ce4e1d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d217c7b12e12e5fb67472452518859ec.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97148e04ca6a9f9dca0aba91ce4e1d84.png)
(2)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f6561afc52e177073f78bc23ef2515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
【推荐3】已知函数
,
.
(1)判断函数
的单调性,并用定义证明你的结论;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c20d44bb8088a52423c32fc104d46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2acf5271208a96415ffdc85cd04447.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa1eaf1ea8f9d430c5ae14fd490f3b1.png)
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