1 . 已知函数
,
关于
的方程
的实根情况,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5397ee1eb6d157f6ec1e7a878f8d16e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca442e149aa400cfcc84829cfe5113f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83863a8b6e1da6bd9b3195f856e36290.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
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名校
解题方法
2 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eebe19ed347cbefab74981e253428d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46902ee9fbd30111d7831f1fc7b79641.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-09-09更新
|
921次组卷
|
2卷引用:浙江省温州市2021-2022学年高二下学期学考模拟测试数学试题
解题方法
3 . 从某城市抽取100户居民进行月用电量调查,发现他们的用电量都在50到350度之间,将数据按照
,
,…,
分成6组,画出的频率分布直方图如下图所示,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b96b1aa308c2f65148bce39b1aa251e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb250ba99e3b77880021da8e7e658ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d4dd96dafdab02c8483d8a0c713278.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/c4b34dc0-0020-49df-811f-ea77c3dd9669.png?resizew=290)
A.直方图中的![]() |
B.这100户居民月用电的平均数约为186度 |
C.这100户居民月用电的中位数约为200度 |
D.这100户居民月用电的众数约为175度 |
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4 . 下列化简正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
5 . 在
中,
,
,
,若
,若
,则
的值为( )
![](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/ac2ae98eb223b4fe33e53e9d3ba4cc40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a9d71c377531963c2a817bbf3f2cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce225d912ffd10d3409cd56ad3762471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.2或![]() | B.![]() | C.1 | D.2 |
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6 . “
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb12ae6e1e0c3158842e322608c115bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7524229ae59d13b975dfaf2af5180e0.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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7 . 已知函数
(
,
)的部分图象如图所示,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a067e86ae162185a04bdf862b40cd255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c16cc7ecce3766b1de269db898c26d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89040554aa79926881b74fe954e4d08a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/4/407a2949-da84-4262-9f17-fb77c5d33547.png?resizew=163)
A.函数![]() | B.函数![]() ![]() |
C.函数![]() ![]() ![]() | D.函数![]() ![]() |
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解题方法
8 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277f0afd190c1ae061ef04dae04376c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d47337f674393b2102a8e0ae4f4b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 已知定义在
上的函数
.
(1)当
时,求
的值域;
(2)若函数
在
上单调递增,求实数
的取值范围;
(3)若函数
的定义域内存在
,使得
成立,则称
为局部对称函数,其中
为函数
的局部对称点.若
是
的局部对称点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1758295175c9845749bfdfb0880c0d2f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5f835d9cbbdcb063bdfeed0a9079e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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10 . 如图,在三棱锥
中,平面
平面
,
,
为
中点且
.
(1)求证:
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7b2de299e42614a40b72b3126c3e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5f0e2cc2158bd508edd68e05a892b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/1d7ad316-503e-4255-9599-a95289ea3952.png?resizew=133)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed46a014ece6a0830c7c8b8deb2c56e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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