名校
1 . 已知函数
.
(1)若
存在极值,求
的取值范围;
(2)当
,且
时,证明:函数
有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a970882dcc8b8f54905841c10e6e3a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffd1f6bd3686a07efa4086a02b96a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/556eac935a69ae56fb1d63bee5a1e5dc.png)
您最近一年使用:0次
2023-02-21更新
|
777次组卷
|
3卷引用:广西南宁市第三中学2023届高三下学期数学强化训练试题(一)
名校
解题方法
2 . 如图,在四棱锥
中,
是边长为2的等边三角形,梯形
满足
,
,
,M为AP的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878587058946048/2924764614393856/STEM/c324e68b-eab1-4f19-b18d-e8661c31a056.png?resizew=174)
(1)求证:
平面
;
(2)若
,求点C到平面PAD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e921f46d90e43f4517c55832b6280f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878587058946048/2924764614393856/STEM/c324e68b-eab1-4f19-b18d-e8661c31a056.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfacd208d769d01f1d4ef20313cd869.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cd5c4f8b106d01e0e431078e1a468b.png)
您最近一年使用:0次
2022-02-26更新
|
520次组卷
|
3卷引用:广西南宁市第三中学2023届高三下学期数学强化训练试题(一)