1 . 在数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b075bc5ce10f754e3be3357e195dff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 .
,
是定义在R上的函数,
,则“
,
均为奇函数”是“
为奇函数”的( )条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7863b54185da5a3f1a765e1aa0577e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
A.充要 | B.充分而不必要 |
C.必要而不充分 | D.既不充分也不必要 |
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解题方法
3 . 设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba24a5dce47fbd2a79a593ca0be5069.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8011eeefc40482bd0e627d84a30aeb19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba24a5dce47fbd2a79a593ca0be5069.png)
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4 . 用篱笆在一块靠墙的空地围一个面积为
的等腰梯形菜园,如图所示,用墙的一部分做下底
,用篱笆做两腰及上底,且腰与墙成
,当等腰梯形的腰长为多少时,所用篱笆的长度最小?并求出所用篱笆长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8fbf64cd29a08ae703e9fa2035f3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
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昨日更新
|
51次组卷
|
2卷引用:山东省青岛市四校联考2023-2024学年高一下学期期中考试数学试题
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5 . 在
中,三边长分为
,则最大角和最小角之和是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b402556748bd8809ca3602ed799b2cb5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知
中,
,则AB中线CM长等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8947eb22e074632f4c38c27e2fea64.png)
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7 . 若复数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb1edb878ce2987e6a6027e5233bb9e.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbcb5bc5601877cc286185236378fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb1edb878ce2987e6a6027e5233bb9e.png)
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解题方法
8 . 已知随机变量
的分布列如下,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514aef3dd8e1fa10b420a03b18a0e376.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514aef3dd8e1fa10b420a03b18a0e376.png)
![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() | ![]() |
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解题方法
9 . 若角
的终边经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d884fb14030b8961927fe6c9c3778ed9.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d884fb14030b8961927fe6c9c3778ed9.png)
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10 . 设函数
的导函数为
的导函数为
的导函数为
.若
,且
,则
为曲线
的拐点.下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a00a7220fe1f1699aa32ea0c70a303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7cba7cd15304286a0f063cbd8010bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4ebc24433085ec7985fe753f7e5851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aa5809890eb4f90c99800530027ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e0da3107ae7d783e36310e2f28b10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
A.曲线![]() | B.曲线![]() |
C.曲线![]() | D.曲线![]() |
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