解题方法
1 . 已知函数
(
,且
)与幂函数
.
(1)当
的图象过点
时,求
的值;
(2)当
的图象过点
时,求
的值;
(3)在(1)、(2)的条件下,求函数
在区间
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f212e63cafd79ee0a45b0bd5581b723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9945ebacc01cfc685ef005a71bd2604d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7362fa526a84b0ce2f5a2021dbc44399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad956052b325fcf78b97901e364bc5b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
(3)在(1)、(2)的条件下,求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67fabe01bc388133edfcff0c4c72e35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
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2 . 若对数函数
和函数
在区间
上均单调递增,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aed836238aee5b6084b5837e83535a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f153f03a6c71150698f38af2884ff51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 化简
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc6aa049d9a79cd5ea23a98abb6454b.png)
A.1 | B.3 | C.4 | D.8 |
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4 . 已知函数
(
,且
).
(1)求函数
的定义域;
(2)判断函数
的奇偶性,并说明理由;
(3)求使
成立的x的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f217a3002b68e41266d6529883c3958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ef5e024b2d975e7ccdc86a7c0b804c.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ef5e024b2d975e7ccdc86a7c0b804c.png)
(3)求使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41dc58a1d8cd6997b25a8c561a70f67f.png)
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5 . 计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e31ccdbbfbe34d53d185ba10b2f9b83.png)
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6 . 已知函数
,则关于x的不等式
的解集是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c5cff21e8d60f3f754cd028f0543a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196f8c42845a5d229e139debd71b9f5b.png)
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解题方法
7 . 已知
是定义在
上的奇函数,且
,若对于
,都有
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e181cdd42105f02e1a4446054ae65d34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de08b828d6a9fff707e17974d1f9d8c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbc0228bb1de7949bda11c6301b541b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b0164e5f02c290ec1cbb208ec1f69c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
8 . 设
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca31afafd24949b4f36dccc002e7bff9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 设全集
,集合
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50e12498822fdc313e9a8c9e474a6f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4624ecf0cb5dead03e83414f078c025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eda1da6372c69ab4ec5046ec2d9ea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知函数
在
上的大致图象如图所示,则
的解析式可能为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/7f5dad41-704e-40bb-a73a-9b0ea39f381c.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e0e5731036a0d9c3109c541e126d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/7f5dad41-704e-40bb-a73a-9b0ea39f381c.png?resizew=164)
A.![]() | B.![]() |
C.![]() | D.![]() |
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