解题方法
1 . 已知函数
.
(1)已知m=-3,求函数在区间
上的最大值
;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae57d60ad32ee726bceb8c7316d348b.png)
(1)已知m=-3,求函数在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d363369168d2094d8b12ed1d4c0bc3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4729ee80c18733f4290fc546e7c106.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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19-20高一·浙江·期末
2 . 已知函数
的定义域为
.
(1)求函数
的定义域
;
(2)当
时,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c6a5cc816d6d8f177422778b60305f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032d03c5ba6d7cf9c1b41de6f3f33df7.png)
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3 . 若实数x、y满足
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1077d3f978196dc7784012c5e80be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee6f9f813912e0e87584897fe320b21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-14更新
|
311次组卷
|
2卷引用:浙江省金华市浦江县第三中学2020-2021学年高一上学期第二次阶段考试数学试题
4 . 已知:
.
(1)若
在
上单调递减,求
的取值范围;
(2)对任意实数
,
的最大值与最小值之差为
,求
.
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/8cc59e49b52b478495af34161df898b4.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/3894d5f0c3b140a8a3ea51cb5169391e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/36495afcd2554d54a06ca2ea80fb5c1a.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/bda8d4f81c6641098d38309f5748688c.png)
(2)对任意实数
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/f609a9d9ee7f4356ab3e636a2325f542.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/3894d5f0c3b140a8a3ea51cb5169391e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/c2d4394f2ace47d2a4ec4507a9ec9105.png)
![](https://img.xkw.com/dksih/QBM/2016/4/7/1572575522603008/1572575528878080/STEM/c2d4394f2ace47d2a4ec4507a9ec9105.png)
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