1 . 设数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f1e3715064947e94c0b25f7940b93c.png)
,如果
,且
,
,对于
,
,使
成立,则称数列
为
数列.
(1)分别判断数列
和数列
是否是
数列,并说明理由;
(2)若数列
是
数列,且
,求
的最小值;
(3)若数列
是
数列,且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f1e3715064947e94c0b25f7940b93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e815a51d2602a545588c5a1d0fdaebdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b8f5ba01a66cbfd850275b11ecca76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602744ef8bcccfdd9f00bd275e2ece2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85719767bc8b764fcde16731c1ea45c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2ebecf4a0f024b9fcf300196c52493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300b8b745c8f8b5e095cf7dc81d0ecf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152094b2404f8f0f27f56ed43d9eee5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)分别判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63541441d26f277d9ed7816c089c6b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38ef6812c86a02d00dd485785d7f926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f73eec2bbbfa166f874c39d05accb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae270cb776026e11a9ca10f4d5098da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2 . 设函数
,曲线
在点
处的切线方程为
.
(1)求
的值;
(2)求证:当
时,
;
(3)问存在几个点
,使曲线
在点
处的切线平行于
轴?(结论不要求证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f03892edc3791fc4301346bbe8adb91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd7c022716a34c700bb20d12491f9a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be503b0376fb4904d23e845543bf11e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f58d9ec33e1a403057d22e8c6d97f6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6e5423204ce11a595dec373194fe11.png)
(3)问存在几个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67625eb1fab3a4c17735f424e416b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2023-11-09更新
|
284次组卷
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2卷引用:北京市大兴区2024届高三上学期期中检测数学试题
解题方法
3 . 已知函数
,
.
(1)若曲线
在点
处的切线方程为
,求
的值;
(2)设函数
,证明:
的图象在
的图象的上方.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d53e84446ab2d482dd8cdfeb27b402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a743eba260bbd19d24ac32254cf5e3b.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa753e02c7701dd3af3c739ec5526102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f9bd7fdb0c44b5e2e1d5a59dd6f7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad943afa2f98fab0ff21f4463579a1c7.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bc7b734dd3fbf2fde961b25e5ad876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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4 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)设
,求证:当
时,
;
(3)对任意的
,判断
与
的大小关系,并证明结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38e2cfb9e16f2f5d7a1e9a7590dd073.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585de67a3fc494297d375d339af6d153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b79ae1ceee652b06fc889607ff3f1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa38ca27c6c0c40d5e36b2ae4fb7ba7.png)
(3)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c975a637794e6be6dd95e1e1ba12620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa9fca7538f46d9d2b4429dd085ac78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
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2023-06-18更新
|
428次组卷
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2卷引用:北京市大兴区2022-2023学年高二下学期期中考试数学试题
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5 . 若数列
的子列
均为等差数列,则称
为k阶等差数列.
(1)若
,数列
的前15项与
的前15项中相同的项构成数列
,写出
的各项,并求
的各项和;
(2)若数列
既是3阶也是4阶等差数列,设
的公差分别为
.
(ⅰ)判断
的大小关系并证明;
(ⅱ)求证:数列
是等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6445438ad302d53a1a94d36d1348f9b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c1ed7b10ac7ca1cd81cdd39a8fcc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c15034b5b5cb8ca7ef64bb7517a19a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5708191e2a4453461ea398c4e16ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7b0cec593a0ea2980b968d3aa826e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367c96a0ff95b92877eda2a7c98871e1.png)
(ⅰ)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367c96a0ff95b92877eda2a7c98871e1.png)
(ⅱ)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2022-11-02更新
|
460次组卷
|
3卷引用:北京市大兴区2023届高三上学期期中检测数学试题
名校
6 . 设数列
的前
项和为
,
,
.给出下列四个结论:
①
是递增数列; ②
都不是等差数列;
③当
时,
是
中的最小项; ④当
时,
.
其中所有正确结论的序号是____________ .
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe309f340976a2eb676a3e7eb05a154.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772bbf90e0f049e3d8281a014bda5e87.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab617790d6afa32d002e19a36ea7e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e246dc281a49c7387b3c096def47922.png)
其中所有正确结论的序号是
您最近一年使用:0次
2022-11-02更新
|
743次组卷
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3卷引用:北京市大兴区2023届高三上学期期中检测数学试题
7 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6219c6f52879c04630cb2f05d262bb98.png)
A.![]() | B.对![]() |
C.不存在正实数a,使得函数![]() | D.方程![]() |
您最近一年使用:0次
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8 . 如图,已知正方体
中,
为线段
的中点,
为线段
上的动点,则下列四个结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887787316985856/2891584647790592/STEM/796bd250-15a4-4a92-ac5c-ec59f85d87ad.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887787316985856/2891584647790592/STEM/796bd250-15a4-4a92-ac5c-ec59f85d87ad.png?resizew=182)
A.存在点![]() ![]() ![]() ![]() |
B.三棱锥![]() ![]() |
C.直线![]() ![]() ![]() |
D.存在点![]() ![]() ![]() |
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2022-01-10更新
|
1615次组卷
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9卷引用:北京市大兴区2023-2024学年高二上学期期中检测数学试题
北京市大兴区2023-2024学年高二上学期期中检测数学试题福建省宁德市柘荣县第一中学2021-2022学年高二下学期期中考试数学试题北京大兴精华学校2023届高三上学期12月月考数学试题(已下线)高二上学期期中考试选择题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)北京市十一学校2022届高三1月月考数学试题黑龙江省齐齐哈尔市第八中学校2022-2023学年高二上学期10月月考数学试题黑龙江省大庆第一中学2023-2024学年高二上学期第二次验收考试数学试题北京市广渠门中学2023-2024学年高二上学期10月月考数学试题北京市第五十五中学2023-2024学年高二上学期12月月考数学试卷
名校
解题方法
9 . 在平面直角坐标系中,定义
、
两点间的直角距离为
,如图,
是圆
当
时的一段弧,
是
与
轴的交点,将
依次以原点
为中心逆时针旋转
五次,得到由六段圆弧构成的曲线.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de49f3cfe85c4ae1d7ecb30075848e87.png)
_______ .若点
为曲线上任一点,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af405a054bfe7fb7ce40e48d816467e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea37e25ba5e11e5e2c428996f74e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978ce4ca52b9c915574d50d64ce348b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239ff12eb6cba0100f0dadb847c90ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de49f3cfe85c4ae1d7ecb30075848e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4298f459599feb1a5ed4dce607b8e3d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/8/2716842768228352/2718602291453952/STEM/3903e3564b0e40039bf873d70ad1e715.png?resizew=166)
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2021-05-11更新
|
983次组卷
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5卷引用:北京市大兴区2023-2024学年高二上学期期中检测数学试题
北京市大兴区2023-2024学年高二上学期期中检测数学试题福建省南平市2021届高三二模数学试题湖北省武汉市第二中学2021-2022学年高三上学期暑期模拟数学试题(已下线)专题14 参数方程与极坐标方程-备战2022年高考数学(文)母题题源解密(全国乙卷)(已下线)专题27 直线与圆的综合应用-1
名校
10 . 在空间中,四条不共线的向量
、
、
、
两两间的夹角均为
.则
的大小为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
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