1 . 已知函数
.
(1)讨论函数
的导函数的单调性;
(2)若
,求证:对
,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064ab07bf0b98956e50112355397a956.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c63ba7ec79645e3b4ea2bf4a00a147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f832d9cca2d5c9d76d38374e2a258d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7d568afbc6bd099d92a123b5149cb1.png)
您最近一年使用:0次
解题方法
2 . 已知函数
,
.
(1)当
时,求不等式
的解集;
(2)若对任意
,存在
,使得
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb84fe64f3e7454332ef17e582077a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a67a908b144108878ec55332f3da43.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04bbcc3eb28e550b30e7ba6eaa09fe8f.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6feeaebbb206ac2f44afc4b531f881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35c5b975136fa2768b970c4f5c3131e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
您最近一年使用:0次
3 . 如图,为测量某雕像AB的高度(B,C,D,F在同一水平面上,雕像垂直该水平面于点B,且B,C,D三点共线),某校研究性学习小组同学在C,D,F三点处测得顶点A的仰角分别为
,
,
,
米.
(1)求雕像AB的高度;
(2)当观景点C与F之间的距离为多少米时,△CDF的面积最大?并求出最大面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53e3cd4566cc35d715806d5fca506db.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/29/2a63eb2c-12e5-4e46-a71c-7846e4f7c5b5.png?resizew=176)
(1)求雕像AB的高度;
(2)当观景点C与F之间的距离为多少米时,△CDF的面积最大?并求出最大面积.
您最近一年使用:0次
解题方法
4 . 在等比数列
中,已知
,
.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a135c20407aa59f589f9e2e837fc37b2.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3271dddb9124f7c27909b821bd3d09e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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解题方法
5 . 设△ABC的内角A,B,C所对的边分别为a,b,c,
,且
.
(1)求证:
;
(2)求△ABC面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79998787e2d78b13494915896c446d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b409809543bae9f5e231a83e515dbbf.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66cbc9e5601178878c36c4f744bffa1.png)
(2)求△ABC面积的最大值.
您最近一年使用:0次
名校
解题方法
6 . 如图,在正方体
中,E是棱
上的点(点E与点C,
不重合).
(1)在图中作出平面
与平面ABCD的交线,并说明理由;
(2)若正方体的棱长为1,平面
与平面ABCD所成锐二面角的余弦值为
,求线段CE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/28/44e1db2d-3cdb-4d89-8b8d-4c6809dd2361.png?resizew=153)
(1)在图中作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
(2)若正方体的棱长为1,平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9662368fd788afb77b79035cdd268b.png)
您最近一年使用:0次
2023-06-24更新
|
583次组卷
|
4卷引用:贵州省安顺市2022届高三第一次教学质量监测统一考试数学(理)试题
贵州省安顺市2022届高三第一次教学质量监测统一考试数学(理)试题黑龙江省大庆市萨尔图区第二十三中学2022-2023学年高二下学期期末数学试题(已下线)1.4.2 用空间向量研究距离、夹角问题(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)江西省上饶市广丰区私立康桥中学2023-2024学年高二上学期期末模拟数学试题
7 . 如图,在三棱柱
中,平面
平面
,四边形
是正方形,O是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/70fe19f2-c519-4a3c-b839-be38341804f8.png?resizew=194)
(1)证明:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7af14145a4431ac0c7699f4269645f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/70fe19f2-c519-4a3c-b839-be38341804f8.png?resizew=194)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f6a1b0761cb375279e1b76e6c2eefc.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d4e5503f20c3bcb6e511bf181303a7.png)
您最近一年使用:0次
2023-01-15更新
|
185次组卷
|
2卷引用:贵州省安顺市黄果树高级中学2022-2023学年高二上学期第一次月考数学试题
解题方法
8 . 已知集合
或
,集合
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/e6988e41-2b2b-4931-818e-b33a45e21461.png?resizew=176)
(1)若
,求
和
;
(2)若记符号
,在图中把表示“集合
”的部分用阴影涂黑,并求当
时
;
(3)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95fb92d5b129640d582fd993cd8b0884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3d483587c95ec323e8fdd68f6f591b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8904ce5a700988ba498ff38a718b268b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/e6988e41-2b2b-4931-818e-b33a45e21461.png?resizew=176)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若记符号
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8fc47d0249c63077fc0fd76946fbc73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 如图,四棱锥
中,侧面
为等边三角形且垂直于底面
,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/f13642b7-2f27-416f-b1c5-54afbfdb662d.png?resizew=254)
(1)求证:平面
平面
;
(2)点
在棱
上,满足
且三棱锥
的体积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d5a42a8509e15a0dca186f06be73dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af36689a2d2a5f999b3b5859a3c9faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/f13642b7-2f27-416f-b1c5-54afbfdb662d.png?resizew=254)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44cd09d9ad46264de4620c60370d49d.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19fbdea3d444b6ed35929aa8d59da89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790c0a17ee2d7181ee95da741694bd1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-01-14更新
|
2894次组卷
|
6卷引用:贵州安顺市2023届上学期高三期末数学(文)试题
贵州安顺市2023届上学期高三期末数学(文)试题(已下线)河南省济源市、平顶山市、许昌市2022届高三文科数学试题变式题16-20第8章 立体几何初步 章末测试(基础)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)专题训练:线线、线面、面面垂直证明(已下线)专题8.14 空间直线、平面的垂直(二)(重难点题型检测)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)广东省深圳市富源学校2022-2023学年高一下学期5月月考数学试题
10 . 已知函数
,其中
.
(1)当
时,试判断函数
的零点个数;
(2)若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a3031793e9bd0d5344c7edcbbc2b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e37c35e33ffa1a55a0693ae2319da91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-01-14更新
|
335次组卷
|
3卷引用:贵州安顺市2023届上学期高三期末数学(理)试题