1 . 已知数列
满足
记
.
(1)证明:数列
为等比数列,并求出数列
的通项公式;
(2)求数列
的前
项和
.
(3)设
,记数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead92b9d9d976b90729da850bee2867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4188680e5320653753ad0340439cb77.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d27e85083be03c10537535ec96e424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c215db1d8f69757118ad405b78035628.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
.
(1)求证:
;
(2)证明:当
,
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120ba271c6dd7bc66c1d27366d5ee68c.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256f3981024e53f373a80aad40e994ae.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d8194a129e25082d16116d7abf8452.png)
您最近一年使用:0次
2022-11-25更新
|
376次组卷
|
2卷引用:四川省宜宾市2023届高三上学期第一次诊断性数学(文)数学试题
名校
解题方法
3 . 如图,已知
为二次函数
的图像上异于顶点的两个点,曲线
在点
处的切线相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/b1c9ee20-7af4-4018-a49a-6703b2da8013.png?resizew=203)
(1)利用抛物线的定义证明:曲线
上的每一个点都在一条抛物线上,并指出这条抛物线的焦点坐标和准线方程;
(2)求证:
成等差数列,
成等比数列;
(3)设抛物线
焦点为
,过
作
垂直准线
,垂足为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031da5d48fbe63745429b1add253344f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c60b6eee6448a408616e1b61bd793f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031da5d48fbe63745429b1add253344f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/b1c9ee20-7af4-4018-a49a-6703b2da8013.png?resizew=203)
(1)利用抛物线的定义证明:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297426b8f7938c8d14f42a481a19c3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b440f7aac4b432fef8f4c9f8e3f76.png)
(3)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b7a8d232e9a11f5d471f47a1294cd4.png)
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名校
解题方法
4 . 几何体
是四棱锥,
为正三角形,
,
,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/c4f92b87-66db-461f-886d-891d1f5c9957.png?resizew=144)
(1)求证:
平面
;
(2)线段
上是否存在一点
,使得
四点共面?若存在,请找出点
,并证明;若不存在,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ad8d16722f5b9e7fd2602f14d5ffbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0382c28547d3834ca71f3f0677695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/c4f92b87-66db-461f-886d-891d1f5c9957.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba8f7af0e091e082100c3cd7f8c487f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9635120b0064caffba6d42091833d069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2022-11-03更新
|
975次组卷
|
4卷引用:黑龙江省哈尔滨市宾县第二中学2022-2023学年高三上学期期中考试数学试题
黑龙江省哈尔滨市宾县第二中学2022-2023学年高三上学期期中考试数学试题四川省峨眉第二中学校2022-2023学年高二上学期10月月考理科数学试题(已下线)8.5.3平面与平面平行(精练)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)(已下线)第26讲 空间直线、平面的平行的判定4种常见方法
真题
解题方法
5 . 已知
是定义在R上的不恒为零的函数,且对于任意的
都满足:
.
(1)求
的值;
(2)判断
的奇偶性,并证明你的结论;
(3)若
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388c1c3c57e5d2c13a58dc45705276c5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9b4297c57a4526f85fce9e67ce5d2d.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de00e47cd1a3038f4050d513f8f60e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec986caf655f8f76d4f9879bf63223bd.png)
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真题
6 . 证明:如图,
是圆O的直径,
是圆O的切线,切点为B,
平行于弦
,求证:
是圆O的切线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/483a5d01-63c2-4101-9618-f9b637a889eb.png?resizew=137)
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名校
解题方法
7 . 如图,在三棱柱
中,
是边长为4的正方形,平面
平面
,
,
,点
是
的中点,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/a220b539-d15b-4fc6-9a79-067aec354190.png?resizew=134)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
平面
;
(2)求证:
平面
;
(3)证明:在线段
上存在点
,使得
.并求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/a220b539-d15b-4fc6-9a79-067aec354190.png?resizew=134)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea55a7e39361987096953d3a3ee1eaa4.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
(3)证明:在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84a436704964dc76f16c2c23665ab3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04c68f1ef1e37534b5bbc7a1f592ef7.png)
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2022-12-04更新
|
709次组卷
|
2卷引用:北京海淀区教师进修学校2023届高三上学期12月月考数学试题
8 . 如数学命题一般由“条件”和“结论”两部分组成,正确的命题揭示了“条件”与“结论”之间的必然联系,如果我们把命题中的“条件”和“结论”互换身份,就有可能得到一个有意义的逆向命题;把一个数学命题中的某些特殊的条件一般化(比如取消某些条件过强的限制),从而得到更普遍的结论,叫做数学命题的推广.这两种方式都是发现数学新知识的重要途径.下面,给出个具体问题,请你先解答这个问题,并尝试按上面提示的思路,提出有意义的问题.在平面直角坐标系中
,
,动点M满足,直线
与
的斜率乘积为
,动点M的轨迹为曲线
,与x轴垂直的直线分别交
,
于点E,F.
(1)求曲线
的方程;
(2)求证:直线
与直线
的斜率乘积为定值;
(3)请在一般的椭圆方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
中,尝试把问题(2)的结论归纳总结出来.(无需证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993769b494e12c21dff0ee7c53a4a49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b3d921f595f28960abcdce6dfbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e1bb189df5a70eaca676f99aeb5b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(3)请在一般的椭圆方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
您最近一年使用:0次
9 . 记
是公差不为0的等差数列
的前
项和,已知
,
,数列
满足
,且
.
(1)求
的通项公式,并证明数列
是等比数列;
(2)若数列
满足
,求
的前
项和的最大值、最小值.
(3)求证:对于任意正整数
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b106f3aed5e2f23e10c1605045dccbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360d929d12ccfdf847e487cf8eeabf38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2669b03c9edf3947bd588e5bb0d800d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9b0e5214575fdbfbe00302189656f7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907fce0e59f19c1dfcad75aceac9572b.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7572ce0d3130c83d0025e1854d63a548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)求证:对于任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd01dc4ac5ae74f09dddd2882bf3b24.png)
您最近一年使用:0次
2022-11-23更新
|
1407次组卷
|
5卷引用:天津市南开中学2022-2023学年高三上学期第二次月考数学试题
天津市南开中学2022-2023学年高三上学期第二次月考数学试题(已下线)专题05 数列放缩(精讲精练)-1天津市微山路中学2022-2023学年高三上学期期末数学试题(已下线)专题6-3 数列求和-1天津市南开中学2023届高三上学期期中数学试题
名校
解题方法
10 . 在
中, 角
的对边分别为
, 若
.
(1)求证:
;
(2)对
, 请你给出一个
的值, 使不等式
成立或不成立,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03290185439a3e7332f41ea038f43eaf.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46abdcf989e4e121de989f73340a55f9.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abad0f9bfeee920a0444badf1701a2f.png)
您最近一年使用:0次