1 . 已知函数
.
(1)求函数
在
上的单调递减区间;
(2)若函数
在
上有两个零点,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915082767c57da5d11c1d7c7027d2ac0.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71163f419555f2ed76075c8ff659fbfc.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29145ea38299ebe4c2424013b73e2043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba534fafe7885856f41be92f1eca719.png)
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解题方法
2 . 已知
,
,其中
,
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e70e388af6a9fb1cb4ca416c608d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad6c52216a9bf7f367bb9cfd6edc156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ac5ed81371243d3b7b69b21c6f0611.png)
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解题方法
3 . 已知三个不共线的平面向量
,
,
两两所成的角相等,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc5a89794003a5464eaeadacd1c51d4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e310702748855c3edccd151aae0143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fa8ea29001bb1f0c1e5157aff2fca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3361b587b611701daf8078c1b2d8e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc5a89794003a5464eaeadacd1c51d4.png)
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解题方法
4 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7427e3dee83ed2f556c02bfaca796d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad67fb24e78fd819ac2ae7010bb553ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7427e3dee83ed2f556c02bfaca796d.png)
您最近一年使用:0次
2023-06-20更新
|
526次组卷
|
2卷引用:河北省张家口市2022-2023学年高一下学期期中数学试题
5 . 已知函数
,其图象的两个相邻的对称中心间的距离为
,且
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fdad0c133661182c369fa0969a63a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b69099d2b74ffbb1f365e1468bd8fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40228f79671eb014c2cf465c960e4b0e.png)
A.函数![]() ![]() |
B.函数![]() ![]() |
C.函数![]() ![]() |
D.函数![]() ![]() |
您最近一年使用:0次
2023-06-20更新
|
382次组卷
|
2卷引用:河北省张家口市2022-2023学年高一下学期期中数学试题
解题方法
6 . 为了得到函数
的图像,只需将
图像上的所有点( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b267d0b3aecb6cb75f350c799a389f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
A.先向左平移![]() |
B.先向左平移![]() ![]() |
C.先将横坐标缩短到原来的![]() ![]() |
D.先将横坐标缩短到原来的![]() ![]() |
您最近一年使用:0次
2023-06-20更新
|
1310次组卷
|
3卷引用:河北省张家口市2022-2023学年高一下学期期中数学试题
7 . 下列选项说法错误的是( )
A.若![]() ![]() ![]() ![]() |
B.已知向量![]() ![]() ![]() ![]() ![]() ![]() |
C.已知非零向量![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
8 . 已知函数
在
上单调递减,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17fe2793dfcc8873ae855f782df959c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f8879c9994fe5c7681d7a754be0279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知向量
,
,
,满足
与
共线,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df98407549ea8ecba72278252ef3676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a986b81bdf566111bc229401d65339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95fb8f51aeaef602c52b02f20196768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a36228810d0c2f6c6e53584c1ac176b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.0 | B.3 | C.-3 | D.±3 |
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解题方法
10 . 如图,在
中,D为BC上靠近B点的三等分点,若M为AD上一点,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7c356305864e0658496f1224159807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次