名校
解题方法
1 . 已知
的三个内角分别为A,
,
,且
,
,
成等差数列,则角
的取值范围是_______ ;
最大值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec1bbad89f576c980581bcc1ce5efb1.png)
您最近一年使用:0次
解题方法
2 . 已知数列
满足
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
_________ ;若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e168f5ea3c2bbfb9d2601e2a32ce776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194b8ab194c7d299d5c3e0f09ec18384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fc336b4a83bf6d66c4afcc431597f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acff98078cdd32804d8f1c4efbe2ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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解题方法
3 . 在
中,
,
,
,点
为
的外心,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0976b61141fb7c70efeea95c19ea35b.png)
______ ,
是三角形
外接圆圆心
上一动点,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0976b61141fb7c70efeea95c19ea35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4375c2e6043d6b700c7f1ca0609d6109.png)
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解题方法
4 . 如图,直三棱柱
中,
,
,
,
,
为线段
上动点,
的最小值为______ ,当
最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4eba5a4f83f4d4ef74fb88194d305b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51f7ce48fc259dac927c95afe4ffbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb88a50d8b1ba6b57083f55b32de9a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ace8619a50f5ff9e72d98c2ec289a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4eba5a4f83f4d4ef74fb88194d305b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/eba01e23-257b-480d-8929-aaade1f5b341.png?resizew=128)
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解题方法
5 . 已知函数
则当
时,函数
有______ 个零点;记函数
的最大值为
,则
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c7e57a8eef8b8944192fe7f31753c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
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名校
6 . 某人从甲地到乙地,乘火车、轮船、飞机的概率分别为0.2,0.4,0.4,乘火车迟到的概率为0.5,乘轮船迟到的概率为0.2,乘飞机不会迟到,则这个人迟到的概率是___________ ;如果这个人迟到了,他乘轮船迟到的概率是___________ .
您最近一年使用:0次
2022-03-01更新
|
1257次组卷
|
4卷引用:天津市滨海新区塘沽第一中学2022-2023学年高三上学期第一次月考(线下)数学试题
解题方法
7 . 小明上学途中共有n个红绿灯,且小明遇到每个红灯的概率均为
, 记某次小明上学途中遇到红灯的次数为
,且小明上学途中恰好遇到两个红灯的概率为
, 则n=__________ , E(
)=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f17bbff4c53be2439e24538aa64121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
您最近一年使用:0次
2022-03-01更新
|
645次组卷
|
2卷引用:浙江省百校2022届高三下学期开学模拟测试数学试题
8 . 在△
中,
是
的角平分线, 且交
于
. 已知
, 则
__________ , ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616ede3092beba2244498e05490d459c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9622fd05d2f87560faa1e28345bd564f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616ede3092beba2244498e05490d459c.png)
您最近一年使用:0次
9 . 已知
则
的最大值为__________ , 此时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968b61f3db575f1c55dec7c739d1ed62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47025b731d81d5fc457bba1c79602a4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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10 . 在
的展开式中,第2项的系数为__________ , 含
项的系数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b230b3579058a684f3f2d49c3aa07e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
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