1 . 已知函数
,且点
处的切线为
.
(1)求
、
的值,并证明:当
时,
成立;
(2)已知
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a4edb87617f8dd25e703b7dafdd875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf46dc84732526c826d84a71c407ea89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac2802209e9c013526ef93446d77e5b.png)
(1)求
![](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/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206c6223f53f2291075f407c16fb5d84.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3df3795a62416c1ab5501db40c8206a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7837b7ca9625519a6c7e04930639a38.png)
您最近一年使用:0次
名校
解题方法
2 . 已知数列
满足
,
(
,
),![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa01f03fb074bff35b35e07047d11b1.png)
(1)证明数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
为等比数列,求出
的通项公式;
(2)数列
的前项和为
,求证:对任意
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbd675707e7b2a293d35c2c2690c13c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa01f03fb074bff35b35e07047d11b1.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d307ec71820b6536453fbdb5069da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3860c78a8d25ac6b5c1cff5ebbd960fc.png)
您最近一年使用:0次
2020-11-07更新
|
1083次组卷
|
9卷引用:【全国百强校】河北省唐山市第一中学2019届高三下学期冲刺(一)数学(理)试题
【全国百强校】河北省唐山市第一中学2019届高三下学期冲刺(一)数学(理)试题【市级联考】安徽省合肥市2019届高三下学期四月临考冲刺卷数学(理)试题湖北省襄阳五中、夷陵中学、钟祥一中三校2020届高三下学期6月高考适应性考试理科数学试题宁夏银川一中2021届高三第三次月考数学(文)试题宁夏银川一中2021届高三第三次月考数学(理)试题湖北省荆州中学2020-2021学年高二上学期12月月考数学试题四川省南充市白塔中学2020-2021学年高一下学期第二次月考(6月)数学试题河南省周口市太康县第一高级中学2022-2023学年高二上学期第一次月考数学(文科)试题 河南省周口市太康县第一高级中学2022-2023学年高二上学期第一次月考数学(理科)试题
解题方法
3 . 已知
,
是椭圆T.
上的两点,且A点位于第一象限.过A作x轴的垂线,垂足为点C,点D满足
,延长
交T于点
.
(1)设直线
,
的斜率分别为
,
.
(i)求证:
;
(ii)证明:
是直角三角形;
(2)求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05193d9096bd9da9230acc14228aa4e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817edbb8e01ced216a63c838c7b1a288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0617414b2ad7c96f1a3df4a6dd935395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60af8e12b6205f65f8cb0ecd870601d.png)
(1)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30bf02b822ea9ded2e9fdc868d74ab96.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
您最近一年使用:0次
名校
解题方法
4 . 已知:
,
,
(1)求证:
是等比数列;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f9ca737b137a45f33a4cd1d25713c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e6f1d0a6b2c839dc9e8ca8d79e3cad.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe127cc7e8a95571566569ba5fed0da.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813efb06fdc0bde0fe9e535a4ab013e0.png)
您最近一年使用:0次
名校
解题方法
5 . 已知:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d040fb7c9532ede0f0a817e76aaa24a.png)
(1)证明:对
,且
,有
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d040fb7c9532ede0f0a817e76aaa24a.png)
(1)证明:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e913a009f58d9794d4ec466dc2b0979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c21b7170084a21b41e3a5315baaeed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae3397a23ca37fd94fdf0e0ed60be9ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574c12d63bc6129a634bdd67dc28956b.png)
您最近一年使用:0次
6 . 已知
的内角
,
,
对应的边分别为
,
,
,三边互不相等,且满足
.
(1)比较
与
的大小,并证明你的结论;
(2)求证:
不可能是钝角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/c5db41a1f31d6baee7c69990811edb9f.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/2cd5a7ec932f12eacb2e8793af166d33.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fe34b1cc3a3cfcfad66fb03b9e22c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c147d6cbd7cbaeb8ec08a0ba69cd59dd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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7 . 已知在图1所示的梯形
中,
,
于点
,且
.将梯形
沿
对折,使平面
平面
,如图2所示,连接
,取
的中点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/e10d6ad6-6f09-40f9-9c0f-bb3b83868ef8.png?resizew=366)
(1)求证:平面
平面
;
(2)在线段
上是否存在点
,使得直线
平面
?若存在,试确定点
的位置,并给予证明;若不存在,请说明理由;
(3)设
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66418ef39d3081d89411a4907d8599f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d05b5b9502c2be337f9be84fe4ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ceae9396dc0551b68ac65b5c4648278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306b9504b52df5ad6697fa87200e8a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/e10d6ad6-6f09-40f9-9c0f-bb3b83868ef8.png?resizew=366)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f39524e24db3f7c9e2f49f35b5e660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf910aabe023d18b62268579b6033b18.png)
您最近一年使用:0次
2019-03-06更新
|
534次组卷
|
2卷引用:河北省衡水市第十三中学2019届高三质检(四)文科数学试题
名校
8 . 已知函数
,其中
.
(Ⅰ)讨论
的单调性;
(Ⅱ)当
时,证明:
;
(Ⅲ)求证:对任意正整数n,都有
(其中e≈2.7183为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9f7cb75c5500ad56dfe0f178dedb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(Ⅰ)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257810d08006d4b886331966c99767ea.png)
(Ⅲ)求证:对任意正整数n,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0f4b1e329db4bf6070f993297f9b9.png)
您最近一年使用:0次
2019-01-12更新
|
4102次组卷
|
10卷引用:【全国百强校】河北省武邑中学2019届高三下学期第一次模拟考试数学(文)试题
【全国百强校】河北省武邑中学2019届高三下学期第一次模拟考试数学(文)试题黑龙江省大庆实验中学2019届高三普通高等学校招生全国统一考试文科数学模拟试题【区级联考】天津市蓟州等部分区2019届高三上学期期末联考数学(文)试题【区级联考】天津市部分区2019届高三(上)期末数学(文科)试题【全国百强校】四川省成都市成都外国语学校2018-2019学年高二下学期期中考试文科数学试题江西省五市八校2019-2020学年高三第二次联考文科数学试题湖北省武汉二中2019-2020学年高二下学期4月第二次线上测试数学试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(理)试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(文)试题广东省佛山市三水区三水中学2019-2020学年高二下学期第二次统考数学试题
9 . 如图1,已知
中,
,点
在斜边
上的射影为点
.
![](https://img.xkw.com/dksih/QBM/2018/7/8/1984043695022080/1985696665255936/STEM/5f681ef49f6b4dccac078de8f9fda743.png?resizew=400)
(Ⅰ)求证:
;
(Ⅱ)如图2,已知三棱锥
中,侧棱
,
,
两两互相垂直,点
在底面
内的射影为点
.类比(Ⅰ)中的结论,猜想三棱锥
中
与
,
,
的关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/2018/7/8/1984043695022080/1985696665255936/STEM/5f681ef49f6b4dccac078de8f9fda743.png?resizew=400)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520306e216b3af1fe08c1762e200610f.png)
(Ⅱ)如图2,已知三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
2018-07-10更新
|
540次组卷
|
5卷引用:河北省衡水市第十三中学2019届高三质检(四)文科数学试题
河北省衡水市第十三中学2019届高三质检(四)文科数学试题【全国市级联考】安徽省蚌埠市2017-2018学年高二下学期期末考试数学(理)试题【全国市级联考】安徽省蚌埠市2017-2018学年高二下学期期末考试数学(文)试题【全国百强校】湖南省湘潭县一中、双峰一中、邵东一中、永州四中2018-2019学年高二下学期优生联考数学试题(已下线)2.1.1 合情推理-2020-2021学年高二数学(理)课时同步练(人教A版选修2-2)
名校
10 . 已知函数
的最大值为
.
(1)若关于
的方程
的两个实数根为
,求证:
;
(2)当
时,证明函数
在函数
的最小零点
处取得极小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5365d754d9c46bfa4e43f7b363ad1f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760f804646698060703c5458ff5637c7.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3461ab1b17c62a3beae29f34f0d05b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eeb0a7c38d0fc522bfd7cca20598b32.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774545eed21eefebe5407dfc630861b0.png)
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4卷引用:河北衡水中学2018届高三数学理科三轮复习系列七-出神入化6
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