1 . 函数
的最大值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32640b470a14c95f11b5facc3e142403.png)
A.![]() | B.1 | C.![]() | D.![]() |
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2 . 设关于
的方程
无实根,那么函数
的反函数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d39f2547a960ba2175c9419ceefda79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e687c126d0ec3f9827735c1bfa4f60cc.png)
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3 . 在
中,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceba46526c1a7df5929c00cd257dba3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367de5eb4da2eb016a6bfc78e25f4ceb.png)
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4 . 在三棱锥
中,三条棱
两两垂直,且
.若点
为三棱锥
的外接球球面上任意一点,则
到面
距离的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c7267e5313b9b00ef22c94a479fc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fdf8fda84bfec8d416c4ff96e274c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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2018高三·黑龙江·竞赛
名校
5 .
中,
,C所对的边分别为
,
.
(1)求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2060b4b87b84ef46a38566d7954596.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c0a6efe18abe173b91498ff750cd62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd8dc7ac339df242fa74391768120ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377d8f968709442464168c01380441e8.png)
您最近一年使用:0次
2019-01-28更新
|
320次组卷
|
4卷引用:四川省树德中学2018-2019学年高一4月阶段性测试数学试题
6 . 若实数
、
、
构成以2为公比的等比数列,sinα、sinβ、sinγ构成等比数列,则cosa=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
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7 . 在△ABC中,∠A、∠B、∠C的对边长分别为a、b、c.命题
,且b+c=2a;命题
为正三角形.则命题P是命题q的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/581eb479010ae5e4b174b931f3db9276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518c5e4f1d0853a7eaf971669ab40582.png)
A.充分必要 |
B.充分但不必要 |
C.必要但不充分 |
D.既不充分又不必要 |
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8 . 已知函数
.
(1)记
,求
在区间
内的最大值与最小值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4792192c5534b1c016777584893d3f86.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a50aefb46bedc4167616554a16c448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ec2cae169cca0ee60437a2759ec77a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8e57262c56dfb0f946341024d82716.png)
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2014高三·四川·竞赛
9 . 已知对一切的
恒有
.求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e381eefad61f9ca7b9862e058c90002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9168274ae1d5f93647f01b4455a8d42a.png)
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