已知函数
.
(1)若
时,求
在区间
上的最大值与最小值;
(2)若存在实数
,使得不等式
的解集为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1fa7ece49558a51c8badc7e390e037.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd24da2f3276341a8e5f6d2e8690402.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72e056edc8ce492ccbaaacaeaa7cb1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-11-03 08:57:47
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】已知函数
.
(1)若
,求函数
在区间
上的值域;
(2)求函数
的极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad5907ec47e9e02c2f43816bc016055.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7242b2ab643f9470da77e29d043b893.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】已知函数
,存在实数
满足下列条件:①
;②
;③![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/168f6a264bbf4c62b5a1dd0eb6546572.png)
(1)证明:
;
(2)求b的取值范围.
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/8e71d4bba10a4cea892822aca175ddf4.png)
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/df0e117e26a1405cb3eee53efa475574.png)
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/e45ed22786064e7fbae27198095402c9.png)
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/bb41b98aa1214858b9e76ac35ec51e4f.png)
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/168f6a264bbf4c62b5a1dd0eb6546572.png)
(1)证明:
![](https://img.xkw.com/dksih/QBM/2011/1/12/1569965119741952/1569965125214208/STEM/765e348e06954dd18295fd1437987ed9.png)
(2)求b的取值范围.
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解答题-证明题
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适中
(0.65)
【推荐1】已知函数
.
(1)讨论函数
的单调性;
(2)若函数
有两个极值点,
(ⅰ)求实数
的取值范围;
(ⅱ)证明:函数
有且只有一个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162cc53c9c13f511facd2749ebb5d0c4.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(ⅰ)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ⅱ)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】已知函数
.
(1)当
时,求证:
恒成立;
(2)令
,当
时,求函数
在
上的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b4ff02ad44aa9c955fa103d2fb8a1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6fc40e24a5f7cb47eb665d07f127bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac9eb4f13a6ec140f7050e8d7dde52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbfe8e7fb253685e0e50bae0c5482314.png)
您最近一年使用:0次