解题方法
1 . 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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2 . 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
3 . 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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4 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950655420ae7cae5fbd606e3604864ab.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba16587e556088a35c71f522f988671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950655420ae7cae5fbd606e3604864ab.png)
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解题方法
5 . 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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6 . 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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7 . 若扇形的圆心角为
,半径为4,则其弧长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
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名校
解题方法
8 . 已知直线
,
,
,若它们不能围成三角形,则实数
的取值所构成的集合为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78969fea264a9d821d2135a37e366465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36618b948d9016d68a1107031daa7c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5079697a44cdefdba871523a94a7846a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
解题方法
9 . 随机变量
服从正态分布
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e3c4b8364999202a3aef33105e4f7f.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c67a470ef7c8c9d3afc99c82af18c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb3acaf127eccafb75df7fb0851762a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e3c4b8364999202a3aef33105e4f7f.png)
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2024-04-24更新
|
933次组卷
|
3卷引用:上海市黄浦区2024届高三二模数学试题
10 . 若实系数一元二次方程
有一个虚数根的模为4,则
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1146110d4382c714c10de00dd1273b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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