1 . 已知函数
.
(1)用定义法证明
是减函数;
(2)解关于t的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fdafd96f3833e55601943361fa71710.png)
(1)用定义法证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)解关于t的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e34b9cbb63f8745e64d90919ae6cee.png)
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解题方法
2 . 已知函数
是定义在R上的奇函数,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bffac8a5a466e952c53225fcdc795f9.png)
(1)求
的解析式;
(2)用定义证明
在
上是增函数;
(3)设
,当
时,试求函数
的最大值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0968841c3b9731f5fe1308f9dc7c5023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bffac8a5a466e952c53225fcdc795f9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49935236b13167959c3d07f85e098fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6343069217cd6d8dd32446da428dae46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8413e920cf1bfa9d49cb1115255f2e4.png)
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解题方法
3 . 若存在常数k,b使得函数
与
对于给定区间上的任意实数x,均有
,则称
是
与
的隔离直线.已知函数
,
.
(1)在实数范围内解不等式:
;
(2)当
时,写出一条
与
的隔离直线的方程并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f196f6236188084f3b2c9f2b68c05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cdae269dd62dbfecdd922eb5a53e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c7495bad062bf18b0660bf0edacdce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa43bad66e03bdfe5f6ec5e9fd67fa5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d6a69ad378c3763b40d818e2a7eed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e3d07929aa8b880b94385ba9b10122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3163bde2c97d9a994b666f8b805907f.png)
(1)在实数范围内解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9d149be7bce4fad26fb372bbd025ef.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2faa63899873813748f6a28b8a92e9.png)
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解题方法
4 . 已知函数
为奇函数.
(1)求a的值;
(2)设函数
,
i.证明:
有且只有一个零点;
ii.记函数
的零点为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b073296a8d31514d8b394331df70c2.png)
(1)求a的值;
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6625dd55e79c5115e6e7299cb83600.png)
i.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2faa63899873813748f6a28b8a92e9.png)
ii.记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2faa63899873813748f6a28b8a92e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0b46f954f3590a00fe5a074e8e931b.png)
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2024-02-23更新
|
580次组卷
|
3卷引用:浙江省宁波市鄞州中学2023-2024学年高二下学期期中考试数学试题
(已下线)浙江省宁波市鄞州中学2023-2024学年高二下学期期中考试数学试题浙江省温州市浙南名校联盟2023-2024学年高一下学期寒假返校联考数学试题广东省广州市铁一中学2023-2024学年高一下学期3月月考数学试题
名校
5 . 如图甲,在直角边长为
的等腰直角三角形
中,
,将
沿
折起,使点
到达点
的位置,连接
、
,得到如图乙所示的四棱锥
,
为线段
的中点.
;
(2)当翻折到平面
平面
时,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e210c9698063925ad2df6b6c1749571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499d3a9bd80681b0971f5254746bc12e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16f8a27fbdb9aeac3a315c93338f39.png)
(2)当翻折到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac48b9ac8efbf41d6ab5242d247bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1333acc72211e3ddb9a0f8c726ce8a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ca5b5fd1031438de2d2dd59be8c348.png)
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6 . 如图在四棱锥
中,
,
,
,
,
,
是
的中点.
(1)求证:
平面
;
(2)在棱
上是否存在点
,使得半平面
与半平面
所成二面角的余弦值为
,若存在,求
,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0c8592586107f3e8b1371a89c94e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80195464bceca09370906dbb32363e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a6c501e8522d47051f0dd296e427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43951dba3f9f8548c47bf6f26d58f17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/24f05e60-beda-437d-94aa-7c55c42bb584.png?resizew=138)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b726da5c4e06f8ef37a5ad1d01a275e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddb7c2ca1b6bee86cb24fed02e40da2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffa46d46f7a83d3acc8551e3150c27a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7772e89725df71ecb66470b034e84e24.png)
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7 . 如图,在四棱锥
中,平面
平面ABCD,
,
,
,BD是
的平分线,且
,二面角
的大小为60°.
(1)若E是棱PC的中点,求证:
平面PAD
(2)求平面PAB与平面PCD所成的二面角的夹角的余弦值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3981e7286d41960daf4e110c1c84e03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d5ff57f147aa0628fdd47899b5a132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f479b251fdb01bae6d16abb7f2d694a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/16/2fe762e7-2cb8-475e-8578-34e2971dba4d.png?resizew=166)
(1)若E是棱PC的中点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7175df06e33cad4e6bbc3f2f6b0a2986.png)
(2)求平面PAB与平面PCD所成的二面角的夹角的余弦值
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8 . 定义在
的函数
满足:对任意的
,都有
,且当
时,
.
(1)求证:函数
是奇函数;
(2)求证:函数
在
上是减函数;
(3)若
,且
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c75a15990fdcf1de0a9ac9f475e3c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ce23d4f9f61a8b1f99d11f4cd2c1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f3d2696aed6a4752b7bcc1368f073d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c48eae795e0c5af685624822961d353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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9 . 已知直线
(
)和圆
交于A,B两点,
(1)求证:直线
过一定点
,并求出定点
的坐标;
(2)当线段AB的长取最小值时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b9a65c5495eea4bb71718f41660a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4ce287af69847dbe23dce42c72ebbe.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当线段AB的长取最小值时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
10 . 已知正三棱台
中,
,
,
、
分别为
、
的中点.
(1)求该正三棱台的表面积;
(2)求证:
平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5825e3891ce507d4af2e0d9d1a0b74b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/816f0559-5515-4880-98dc-f2a85b6ee195.png?resizew=160)
(1)求该正三棱台的表面积;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
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