1 . 在等差数列
中,已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37393a73bc9c1006711e3ef5b853453a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
A.-1 | B.0 | C.1 | D.2 |
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解题方法
2 . 记
的内角
的对边分别为
,已知
且
.
(1)证明:
;
(2)若
,求
.
![](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/3ad6a2c2289edb779e4647a32e55efee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5e009486af263893ca8290be72f258.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af14fa03134887a6d68ecbc5f6072d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcfa3e340b3976832d450dd4ae7e7a7.png)
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解题方法
3 . 若
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fea46e581d982f1648459e019e19641.png)
A.![]() | B.6 | C.![]() | D.9 |
您最近一年使用:0次
2024-03-07更新
|
482次组卷
|
2卷引用:浙江省杭州市2023-2024学年高三上学期期末数学试题
4 . 已知
,关于x的一元二次不等式
的解集可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce68727be4e911ae6a7de8ec2700fca.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知各项都为正数的等比数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7de061fa9679f45a3c9af610a8c323f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d97db5bd141353ef541007332da8779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.6 | B.12 | C.24 | D.48 |
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6 . 已知等差数列
各项均为正整数,
,
,则其公差d为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c902b38e71bf7cd4eb2988ba8ac8c533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820a613cf08fcdc92ae0afabd125453d.png)
A.0 | B.1 | C.2 | D.4 |
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解题方法
7 . 单调递增的等比数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614306cc3f34bdee4d5d885b79667645.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77938c3d50a8ce4b9210c554cb2213dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a716a70687e1bb5d8320f7c4a10914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614306cc3f34bdee4d5d885b79667645.png)
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8 . 设实数x,y满足约束条件
,则
的最大值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fc6d9585f23e3cb7e310416299b95c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1995404eb114809bc18fbdb4f1388b2.png)
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9 . 在等比数列
中,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ed131350af1c6506327df7bd44f007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27d520a002d3eebd1758e2c05c15c3f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 设
,
满足约束条件
其中
.若
的最大值为10,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b344e45a362bcd5a5434378282d257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次