名校
解题方法
1 . 已知函数
,则函数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa3fc30e8ef6ab6f3d33a20bee48d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.既有极大值也有极小值 | B.有极大值无极小值 |
C.有极小值无极大值 | D.既无极大值也无极小值 |
您最近一年使用:0次
名校
2 . 在
的展开式中,
项的系数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9e4aaad2115f07ae93e2efce02df15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
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解题方法
3 . 在梯形
中,
,设
,若用
的线性组合表示
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6eab0544c9fad5acde25bec349fb02.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42468c4d607dee3106b0d2ea9f1edc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a6dd07e480128b95f265fae112f4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6eab0544c9fad5acde25bec349fb02.png)
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名校
4 . 设
是空间中给定的
个不同的点,则使
成立的点
的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252bab154aa5bdc9b4bce4c0d43aaf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ac9ab25447f4e1913675c8fc643441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.1 | B.![]() | C.无穷多个 | D.前面的说法都有可能 |
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5 . 某林场为了及时发现火情,设立了两个观测点A和B.某日两个观测点的林场人员都观测到C处出现火情.在A处观测到火情发生在北偏西
方向,而在B处观测到火情在北偏西
方向.已知B在A的正东方向
处,那么火场C与A距离约为___________
.(结果精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36581140ebac5d28438ea63b1b23b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc9600d011c14315338e99623269d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36b7bffda85107582b021928dbd4d3c.png)
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解题方法
6 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c7e086c3ab30df4d79870ae9a3cce5.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3442de0573a140970cbaffc82e1122f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c7e086c3ab30df4d79870ae9a3cce5.png)
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解题方法
7 . 已知等差数列
,
,……,则该数列的前n项和
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb27896219fcacbcf9e01b99f92a893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa792c87a2ea4947e0a29b30a648cde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.无最大值,有最小值 | B.有最大值,无最小值 |
C.有最大值,有最小值 | D.无最大值,无最小值 |
您最近一年使用:0次
解题方法
8 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b21c1ca840ac0f0c4715160fb29753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
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9 . 设
,若函数
的.定义域为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3fa587a9b2e1c9fe82750db0ec22fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd210a5fe44d2d93c98ab6e7a153d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803066e3fe042831652d29d563516679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
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10 . 已知
(i是虚数单位)是实系数一元二次方程
的一个根,那么p,q的值分别是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ccfc8f518104f35f29380e47dd3d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a7b78d895784b4af75b962bd40f07.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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