1 . 已知公差不为零的等差数列{an}满足a1=3,且a1,a4,a13成等比数列.
(1)求数列{an}的通项公式;
(2)若Sn表示数列{an}的前n项和,求数列
的前n项和Tn.
(1)求数列{an}的通项公式;
(2)若Sn表示数列{an}的前n项和,求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
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2021-12-07更新
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1406次组卷
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10卷引用:2016年内蒙古包头市高三学业水平测试与评估(二)数学文试卷
2016年内蒙古包头市高三学业水平测试与评估(二)数学文试卷2016届重庆一中高三下高考适应性考试文科数学试卷2017届广西陆川县中学高三文上学期二模数学试卷湖北省浠水县实验高级中学2017届高三12月测试数学(文)测题河南省实验中学2021-2022学年高二上学期期中数学(文)试题河南省中原名校2021-2022学年高二上学期12月联考文科数学试题黑龙江省哈尔滨市第一中学校2021-2022学年高三上学期期末考试数学(文)试题 河南省顶尖名校2021-2022学年高二上学期第二次素养调研文科数学试题河南省驻马店市新蔡县第一高级中学2021-2022学年高二上学期12月月考(文科)数学试题河南省南阳华龙高级中学2021-2022学年高三上学期12月月考文科数学试题
解题方法
2 . 设函数
.
(1)求函数
的极小值;
(2)证明:当
时,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04305c8f6dcbfa474be7a2244b9faa16.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4318a47d7e83d587e74bab4d3d1f6883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4b393d0b1fb6135ed437cd5e6179bb.png)
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3 . 已知等差数列
的前n项和为
,
,
.
(1)求数列
的通项公式;
(2)若
,求n的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e406b775bbaa0ae52dab5b7bd384a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57964a9b6a7c4a9bad33c4316407c24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61bd1c49c3310b78a3127ee668ec145.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42623ebd4e2a0911d72da99b254e40d.png)
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解题方法
4 . 如图,在四棱锥
中,
平面
,底面
是正方形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1ffb0f3e-a434-4bed-a7da-6d8e8bcff1f9.png?resizew=185)
(1)求棱
的长;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99926bf272cd757f0985c69b390ebcce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1ffb0f3e-a434-4bed-a7da-6d8e8bcff1f9.png?resizew=185)
(1)求棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd7c2767c106faf27d6a97ebc8e739.png)
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名校
解题方法
5 . 如图,在三棱锥
中,平面
平面
,
为等边三角形,
,且
,E,F分别为AC,PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/c686e2c5-6be9-4775-91ee-9d49f55350b7.png?resizew=183)
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4957406b21df59fdf7fa184752287b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/c686e2c5-6be9-4775-91ee-9d49f55350b7.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51838e395dfc9d9ef597d9e01f46272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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名校
解题方法
6 . 设函数
,曲线
在点
处的切线方程为
.
(1)求b,c的值;
(2)若
,求函数
的极值;
(3)设函数
,且
在区间
内为单调递减函数,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10513102497e7956afd3dac309225e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
(1)求b,c的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5cc0a8a4c80f6e1e5bab782894cfe0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47acdaa7db189fa7b579edbadaf115d.png)
您最近一年使用:0次
名校
解题方法
7 . 在
中,角A,B,C所对的边分别为a,b,c,已知
.
(1)求角A的大小;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd7d933b51a7f0cdd7767ae6adc8a402.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8af097c5944be429ff3fe40dfd112d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
8 . 如图,在直三棱柱
中,D是AB的中点.
![](https://img.xkw.com/dksih/QBM/2020/3/11/2417269901877248/2417716733911040/STEM/54492ed0a0cb4c2385b1c56d62e62510.png?resizew=219)
(1)求证:
平面
;
(2)若
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://img.xkw.com/dksih/QBM/2020/3/11/2417269901877248/2417716733911040/STEM/54492ed0a0cb4c2385b1c56d62e62510.png?resizew=219)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d695c8b31b955823b8c3d07b5d94692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de570eefaadf8f41dc67a2a785daae82.png)
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9 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc4b66d1e9456d6e38bd29394ff975.png)
(1)当
时,求函数
在点
处的切线方程;
(2)对
,都有
恒成立,求m的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc4b66d1e9456d6e38bd29394ff975.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d24ae08f436e938531a95fd7a0258f2.png)
您最近一年使用:0次
解题方法
10 . 已知数列
为公差不为0的等差数列,首项
且
,
,
成等比数列.
(1)求数列
的通项公式;
(2)设数列
的前n项和为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be3f864d60fc147b6905979403f3b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e84c30444f13d37ada78285dc4f83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e7b23fd74e3cf89ac541cb7a5d88.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次