真题
解题方法
1 . 在
平面上有一点列
,对每个自然数
,点
位于函数
的图象上,且点
,点
与点
构成一个以
为顶点的等腰三角形.
(1)求点
的纵坐标
的表达式;
(2)若对每个自然数
,以
为边长能构成一个三角形,求
取值范围;
(3)设
,若
取(2)中确定的范围内的最小整数,求数列
的最大项的项数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba46d196fdd451c9be9a0839ee65320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871a1ff16a610b9372e054fc1de582c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae3a88c614758672f5d2f2149236476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9264ace0f81ad6261b83c6777722ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)若对每个自然数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640c261bde3e055c6d9a045aa92d27c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a940220a30d5d3d2c7648b7c693fc22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed900c88cf1ca707255cd73398f6321.png)
您最近一年使用:0次
名校
解题方法
2 . 已知数列
满足
,
,
,n为正整数.
(1)证明:数列
是等比数列,并求通项公式;
(2)证明:数列
中的任意三项
,
,
都不成等差数列;
(3)若关于正整数n的不等式
的解集中有且仅有三个元素,求实数m的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ceb3142d785fe846a8935df2e45500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d280d7c7637028f59649b3025e553cb7.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1602c6064af12eed3fd1291f8272d93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86177a9ae8baa220750bf7c7f2f41eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ac33c2fdec7345569781f9e5f6227d.png)
(3)若关于正整数n的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18f925d1944df03865d6c45d2cdd130.png)
您最近一年使用:0次
2022-01-22更新
|
550次组卷
|
4卷引用:河北省邯郸市部分学校2023届高三上学期11月月考数学试题
河北省邯郸市部分学校2023届高三上学期11月月考数学试题上海市曹杨第二中学2021-2022学年高二上学期期末数学试题(已下线)第03讲 等比数列(核心考点讲与练)-2021-2022学年高二数学考试满分全攻略(人教A版2019选修第二册+第三册)上海市川沙中学2023-2024学年高一下学期数学5月月考数学试卷
解题方法
3 . 记数列
的前
项和为
,已知
,
.
(1)证明:数列
是等比数列;
(2)若关于
的不等式
的解集中有6个正整数,求实数
的取值范围.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79df6b501e8be189ef89bd39c000a4d.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f86e5aaea193d51fa06c58abb3898b.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61118fa8c9fff30da15c12df2b6ebf86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次