名校
解题方法
1 . 已知函数
,
.
(1)若函数
在R上单调递减,求a的取值范围;
(2)已知
,
,
,
,求证:
;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d013335d41c7a1e51b381eb8e7ef977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111870a9ef48f1bb2797ae8f1825a8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9897559d21ef1971f497be4269b107aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f6bf190c55c3a0ddbca2ff7a5ecf42.png)
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2023-12-30更新
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1115次组卷
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3卷引用:吉林省通化市梅河口市第五中学2023-2024学年高二下学期第一次月考数学试题
名校
解题方法
2 . 阅读材料:
(1)如图图片中为初中化学实验试题,请用数学中不等式知识解释题中“氯化钠加的越多,溶液越咸”这句话,用a代替溶质,b代替溶液,c代替添加的溶质并证明.
在氯化钠能全部溶解的情况下:氯化钠加的越多,溶液越咸
(2)结合(1)中的不等式关系与
,
,则有
的不等式性质.
解答问题:
已知a,b,c是三角形的三边,求证:
.
(1)如图图片中为初中化学实验试题,请用数学中不等式知识解释题中“氯化钠加的越多,溶液越咸”这句话,用a代替溶质,b代替溶液,c代替添加的溶质并证明.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/b4d6c48f-2c7c-4490-843e-5e1bef890de1.png?resizew=191)
在氯化钠能全部溶解的情况下:氯化钠加的越多,溶液越咸
(2)结合(1)中的不等式关系与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf7adcc976209d4b686156120bea276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e7456f61a8aff7614ca77f6210ba54.png)
解答问题:
已知a,b,c是三角形的三边,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2011f25d1d487958fce6efc3bd72ef55.png)
您最近一年使用:0次
名校
3 . 如图,
是圆
的直径,点
是圆
上异于
的点,直线
平面
分别是
的中点.
(1)记平面
与平面
的交线为
,证明:
平面
;
(2)设(1)中的直线
与圆
的另一个交点为
,且点
满足
.记直线
与平面
所成的角为
,异面直线
与
所成的角为
,二面角
的大小为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12fa54e80fc52de0701cddc9a4ed47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1443bfe022f648f813fb1e15b2d78b6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/8/fb04c14f-6769-4801-a982-75aa1634ba2f.png?resizew=168)
(1)记平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b60870baa5e3fbc33a749aa5f0a94be.png)
(2)设(1)中的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0dfb67b7d891af4b37d26f754f04a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c171ec70d3220e84f5bd7bd391b0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bad5db9dcc744d95b2eb96b3dd9b16.png)
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解题方法
4 . 阅读材料:
(1)下侧图片中为初中化学实验试题,请用数学中不等式知识解释题中“氯化钠加得越多,溶液越咸”这句话,用
代替溶质,
代替溶液,
代替添加的溶质并证明.
(2)结合(1)中的不等式关系与
,
,则有
的不等式性质.解答问题:已知
,
,
是三角形的三边,求证:
.
(1)下侧图片中为初中化学实验试题,请用数学中不等式知识解释题中“氯化钠加得越多,溶液越咸”这句话,用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)结合(1)中的不等式关系与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf7adcc976209d4b686156120bea276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e7456f61a8aff7614ca77f6210ba54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01721633154e61aa2650bf0b8b10e666.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/2a31b301-f31d-43f1-b62d-80bdc37ca773.png?resizew=216)
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名校
解题方法
5 . 如图,在直三棱柱
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/779992f0-3fd8-45a6-a845-520c38893c99.png?resizew=151)
(1)求证:
;(用向量方法证明)
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/779992f0-3fd8-45a6-a845-520c38893c99.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429228f882da65a8e0064c88d02b8e40.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
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6 . 证明:
(1)若
,则
;
(2)求证:当
为正数时,
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ad6cf9fb725f7947bddaf3149ba07d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca34726fb86e4bdeeb4e87778148bf3.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43545d069f7d7c5f87bfdcad4ce63801.png)
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2022-04-08更新
|
362次组卷
|
2卷引用:吉林省实验中学2021-2022学年高三下学期最后一次模拟考试数学(理)试题
名校
解题方法
7 . 在正四棱柱
中,
,E为
的中点.(用向量的方法证明)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2883777674158080/2929070225489920/STEM/178a81b3-47b8-4fa0-a592-fc7d95a5ce39.png?resizew=152)
(1)求证:
平面
.(用向量的方法证明)
(2)若F为
上的动点,使直线
与平面
所成角的正弦值是
,求BF的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f21c7c194c5bc2986a21fd441c81495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2883777674158080/2929070225489920/STEM/178a81b3-47b8-4fa0-a592-fc7d95a5ce39.png?resizew=152)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4557a368725226f2c8ea2efb7d30e478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若F为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
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2022-03-04更新
|
146次组卷
|
2卷引用:吉林省汪清县汪清第四中学2021-2022学年高二上学期第一次阶段检测数学试题
8 . 已知动点
(其中
)到定点
的距离比点
到
轴的距离大1.
(1)求点
的轨迹
的方程;
(2)过椭圆
的右顶点作直线交曲线
于
、
两点,其中
为坐标原点
①求证:
;
②设
、
分别与椭圆相交于点
、
,证明:原点到直线
的距离为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070e07dc652add7047281a69502a1b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.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/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
2020-11-03更新
|
1221次组卷
|
7卷引用:吉林省抚松县第一中学2021-2022学年高二下学期开学考试数学试题
吉林省抚松县第一中学2021-2022学年高二下学期开学考试数学试题四川省成都市蓉城名校联盟2020-2021学年高三第一次联考理科数学试题(已下线)专题9.8 《平面解析几何》单元测试卷(测)-2021年新高考数学一轮复习讲练测(已下线)【新教材精创】2.8+直线与圆锥曲线的位置关系(2)-B提高练-人教B版高中数学选择性必修第一册(已下线)专题9.8 《平面解析几何》单元测试卷-2021年新高考数学一轮复习学与练山东省烟台莱阳市第一中学2021-2022学年高二下学期开学摸底考试数学试题(已下线)第五篇 向量与几何 专题8 帕斯卡定理、布列安桑定理、笛沙格定理、彭塞列闭合定理 微点3 笛沙格定理、彭塞列闭合定理
名校
9 . 设
,函数
为常数,
.
(1)若
,求证:函数
为奇函数;
(2)若
.
①判断并证明函数
的单调性;
②若存在
,
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6559f6c5bcd240cf567c7e472b12a1a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc679a2fdf60535af5af9b4b517a585.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
①判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e96e9a314387fa1c76e86179ee0121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45340678c2ec1bc8cd68c0a3a2ab8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551ba93905ba57cee861f59f2c883603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-11-06更新
|
678次组卷
|
8卷引用:吉林省白城市洮南市第一中学2022-2023学年高一上学期期末数学试题
名校
10 . 不等式证明:
(1)已知
,求证:
;
(2)已知a,b,c均为正实数,且
,求证:
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ada798eeba5bd19d497bfd0741afd00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbc2278547879e9246de7e749a774d7.png)
(2)已知a,b,c均为正实数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ee79d588c459ae4ca749e7b12d844b.png)
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