1 . 如图,某兴趣小组为测量河对岸直塔高
,选取与塔底
在同一水平面内的两个测量基点
与
,
,
,可测的量有
,
,
,
,
,
,
.
,
,
,
,求塔高
;
(2)用
表示塔高
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8915e8e775538d41debf1933102c6b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0369e9ef206b11b1866147607e0a5af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec66384de001ccfd86e935ddcfe1033d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4465cef54ed3fdd1f195a9e0baab0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fbf6c13e28b4c23da76ae056251618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e360a55b18be925d7bb41694d5d4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6ba951e379fa445714de2ed5a09a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ee2c2082e35f409e2a5280a7ed34c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9df8db541a5b9cb7e3abc91ff1e1304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6578c6768f71b94640326bd42945bc55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ada1ebef4b3815df9a1a129db09df5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd529d318829396b4deecfa43a02183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d487604677ab248f40cbdbe5d01eeba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解题方法
2 . 在
中,角
所对的边分别为
.则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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解题方法
3 . 在
中,
,
,
.
(1)求
和
的值;
(2)判断
是否是锐角三角形,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af273492d6a1bb8912d2bde512130a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b3a08865b7605f248db6669776c62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb75557d217f59ef1f33e8da1ac0d09.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-04-14更新
|
232次组卷
|
2卷引用:黑龙江省七台河市勃利县高级中学2022-2023学年高一下学期5月月考数学试题
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4 . 定义在
上的函数
满足:对任意的
,都有
,当
,
.
(1)求证:函数
是奇函数;
(2)求证:
在
上是减函数;
(3)解不等式:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c75a15990fdcf1de0a9ac9f475e3c92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ce23d4f9f61a8b1f99d11f4cd2c1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efe66db991b562c73ffb16c1e585870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
(3)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c197622f6671d7570c60f314aca4996.png)
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解题方法
5 . 已知定义域为
的函数
是奇函数.
(1)求a,b的值;
(2)若对任意的
,不等式
恒成立,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31b26dcc96e066238dfa3260b08155e.png)
(1)求a,b的值;
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51159984b2cb00f30b3986315019623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b93ba0f484604ed576c6cc05019923.png)
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解题方法
6 . (1)已知
,求函数
的值域;
(2)化简求值:
(i)
;
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc3e5be1796493161a4df7e28a6f6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61509fe6488f3d93724154ee5d57001.png)
(2)化简求值:
(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d57e91f9f0ad5768200f3354bb43cd.png)
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18725d7367fcffabbba33f89c64dc4bd.png)
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7 . 函数
的大致图象为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9892031f0cbb33a322a934dc87f915b5.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-11-17更新
|
1290次组卷
|
9卷引用:黑龙江省七台河市勃利县高级中学2022-2023学年高一上学期期中数学试题
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8 . 命题“
,
”的否定为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35eac3ba2858adffcd1f8052cd795269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdeee752b5340ad19597358b67928be9.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2022-11-18更新
|
482次组卷
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6卷引用:黑龙江省七台河市勃利县高级中学2022-2023学年高一上学期期中数学试题
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9 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcb15b3af156c34b1d36469246f6f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a93031e4fafab7d1e77a04f5f45d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.{4,5,6} | B.{4} | C.{3,4} | D.{2,3,4,5,6,7} |
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2022-11-16更新
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2卷引用:黑龙江省七台河市勃利县高级中学2022-2023学年高一上学期期中数学试题
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10 . 已知
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb49fce1b41033d3b09488fcc0750f9.png)
A.6 | B.![]() | C.![]() | D.![]() |
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2022-11-15更新
|
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2卷引用:黑龙江省七台河市勃利县高级中学2022-2023学年高一上学期期中数学试题