1 . 阅读以下材料,并按要求完成相应的任务:莱昂哈德
欧拉
是瑞士数学家,在数学上经常见到以他的名字命名的重要常数,公式和定理,下面就是欧拉发现的一个定理:在
中,
和
分别为外接圆和内切圆的半径,
和
分别为其中外心和内心,则
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/b1a259a9-1a05-48e4-9259-1977e6f19620.png?resizew=136)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/e5af681c-00bc-49de-b2ce-e7f738fdc6c6.png?resizew=379)
如图1,
和
分别是
的外接圆和内切圆,
与
相切分于点
,设
的半径为
,
的半径为
,外心
(三角形三边垂直平分线的交点)与内心
(三角形三条角平分线的交点)之间的距离
,则有
.
下面是该定理的证明过程(部分)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa96c86a9085aeb7a57ce955200f0c80.png)
延长
交
于点
,过点
作
的直径
,连接
,
.
,
(同弧所对的圆周角相等).
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
,
,①
如图2,在图1(隐去
,
的基础上作
的直径
,
如图2,动手连接
,
,
,
.
是
的直径,所以
.
与
相切于点
,所以
,
.
(同弧所对的圆周角相等),
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
.
②
(1)观察发现:
___________,
___________(用含
,
的代数式表示);
(2)请观察式子①和式子②,并利用任务(1)的结论,按照上面的证明思路,完成该定理证明的剩余部分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97ec04a1aa7ac6fce72d589864940a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942ed7a1f801116d70437254128e17c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95742051f1ab28e701eb18977b9cac3f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/b1a259a9-1a05-48e4-9259-1977e6f19620.png?resizew=136)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/e5af681c-00bc-49de-b2ce-e7f738fdc6c6.png?resizew=379)
如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79516f18a7daf0ad467a48e16d0e65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79516f18a7daf0ad467a48e16d0e65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79516f18a7daf0ad467a48e16d0e65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47d3270501173ad722523a7b91cea01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e09700a78d26bf865945ceec87bd94.png)
下面是该定理的证明过程(部分)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa96c86a9085aeb7a57ce955200f0c80.png)
延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42774a918f52ac8aa8b1f5b78a676f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed609d8930e0b2135e77c79b8e0b2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24af3580af6754589e0df654ca6735f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840f793cf9a73e468427071e9dfecaee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99c854e874161cd936d4d7848d4385e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ca70b1bc18e224ba94d873219a359d.png)
如图2,在图1(隐去
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df1a193f17a78036f3a63c735f79edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
如图2,动手连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9020059d62af7498039f091de6f005ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679165ed0b961fb0e8643fcdab64937b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1949518fc246fbd8426d08f701ade25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd66f89184ca925f4575c26053decf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be72ff5e7abb13db0fc8ccbb492732a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e42ab439ed525d1fd1de20bf921b831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2516c1f30bcef258b201be137b672fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f053a7a463cc1d4b5b866dda0f71dff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f65029da732ae715a88074e3298d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d6c865065e08cd749ea659ce8163271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd66d053fad701617e39569eb47d444.png)
(1)观察发现:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3045155183b60255854bf010b457f115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16268d71c64f43aeeafac9900bdecfe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
(2)请观察式子①和式子②,并利用任务(1)的结论,按照上面的证明思路,完成该定理证明的剩余部分.
您最近一年使用:0次
名校
2 . 如图1,抛物线
的顶点
在
轴正半轴上,交
轴于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/dc0cee2f-1993-4a28-967e-03dc81d4bc36.png?resizew=355)
(1)求抛物线的解析式;
(2)如图2,
是第一象限内抛物线上对称轴右侧一点,过
的直线
与抛物线有且只有一个公共点,
交抛物线对称轴于
点,连
交对称轴于
点,若
,求直线
的解析式;
(3)若点
、
是抛物线的两点,以线段
为直径的圆经过点
,求证:
始终经过一个定点,并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14068b9b324f406b8daf9d4b84adc961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e47e0490783777567ce9ba80a37a20.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/dc0cee2f-1993-4a28-967e-03dc81d4bc36.png?resizew=355)
(1)求抛物线的解析式;
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9de22c289d5e3b5101a720a41155fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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名校
3 . 边长为
的正方形
中,
是对角线
上的一个动点(点
与A、
不重合),连接
,将
绕点
顺时针旋转
到
,连接
,
与
交于点
,
延长线与
(或
延长线)交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/4c80a369-f2ac-45d4-98d0-699c97c32465.png?resizew=188)
(1)连接
,证明:
;
(2)设
,
,试写出
关于
的函数关系式,并求当
为何值时,
;
(3)猜想
与
的数量关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/4c80a369-f2ac-45d4-98d0-699c97c32465.png?resizew=188)
(1)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1294b21ef6800dfdabe426d34e8b563.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8711eddf26d11fc974dfb6da4b640918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e21bf3bb41f4648070c41f0f283945c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d33329e0e6712174ea9e301ee0be506.png)
(3)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
的图象在定义域
上连续不断.若存在常数
,使得对于任意的
,
恒成立,称函数
满足性质
.
(1)若
满足性质
,且
,求
的值;
(2)若
,试说明至少存在两个不等的正数
,同时使得函数
满足性质
和
.(参考数据:
)
(3)若函数
满足性质
,求证:函数
存在零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094f977194228bed828f3507f5898934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a2c48c3896c9f07bc82434e30020fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ff5cb5a9d88ed7db2c06683c3e355.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bea0dd7e474bcd04db2544427ba0488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0feacb36911be3ca27b87449754b28d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842d905700b5635303a740bd0109ff0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5dd698ddbe275267809650dc551e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9b41127e7230a15dcdc5cae08739c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879f7ee2372a171567ae512f66216d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3ab85db456b851bb7bed23fc9a187f.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ff5cb5a9d88ed7db2c06683c3e355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2021-12-15更新
|
768次组卷
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8卷引用:北京市海淀区2019-2020学年高一上学期期末调研数学试题
北京市海淀区2019-2020学年高一上学期期末调研数学试题福建省莆田第一中学2021-2022学年高一下学期期初学科素养能力竞赛数学试题(已下线)第8章 函数应用 单元综合检测(难点)(单元培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)广东省茂名高州市2021-2022学年高一上学期期末数学试题北京市海淀实验中学2021-2022学年高一下学期期中数学试题广西钦州市2022-2023学年高一上学期期末教学质量监测数学试题江西省宜春市宜丰县宜丰中学2022-2023学年高一下学期期末考试数学试题北京市日坛中学2023-2024学年高一上学期期中考试数学试题
名校
解题方法
5 . 已知指数函数
,且
)过
;在①
,②函数
的顶点坐标为
,③函数
,且
过定点
从这三个条件中任选一个,回答下列问题.
(1)求
的解析式,判断并证明
的奇偶性;
(2)解不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d201389571180846b7b0025d6aebaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef782ee17ff19b2ab3a9cc77c0b206e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce71f8ee506de7f71c4b345d532dedf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aed3e7ae49f3b915bb431f0d1be48e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2338b708fdb65059623cc53a729b2a52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae7f8551614b506d0c94a719f58c716.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15166e63c54eee19d27e49e63a1fa76a.png)
(2)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357fddd0030b6b1fcc7c5a4b7b179b2f.png)
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3卷引用:福建省三明第一中学2020-2021学年高一上学期期中考试数学试题(B卷)