1 . 已知函数
的最小值为-6,则实数a的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d55f9b9a59a2ae35afcd3309862ce8e.png)
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2 . 已知函数
,
.
(1)作出函数
的图象;
(2)求方程
的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1152dac89a5550489f036c7c59fc72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37440b57fe2ffc13f2a873e38f55d29b.png)
(1)作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1a4f3d0f4f608ea4e8481843d19429.png)
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2020-01-14更新
|
619次组卷
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2卷引用:江苏省盐城市滨海县2019-2020学年高一上学期期末数学试题
3 . 复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4ecbb55bc2c13d3de236dab86b6573.png)
是实数,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4ecbb55bc2c13d3de236dab86b6573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c84df9b1b979a79e81954e7452f6411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
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2018高三·黑龙江·竞赛
名校
4 .
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)
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2019-01-28更新
|
320次组卷
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4卷引用:江苏省南京市九中2018-2019学年高一第二学期期中学情调研数学试题
5 . 在
中,内角
、
、
所对的边分别是
、
、
.若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774cd650f14c8f6e4fe0c6a432768bb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cb21ae875f36d52d0b6f82b0201d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f774cd650f14c8f6e4fe0c6a432768bb.png)
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2019-01-28更新
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286次组卷
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2卷引用:江苏省南通市2019-2020学年高三上学期期初数学试题
6 . 设H是△ABC的垂心,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94091d69879156a80e8816f06978923c.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e82aba554f42dd062cac247b9a7fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94091d69879156a80e8816f06978923c.png)
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2019-01-28更新
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657次组卷
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3卷引用:江苏省南京市金陵中学、南通市海安高级中学、南京市外国语学校2020届高三下学期第四次模拟数学试题
江苏省南京市金陵中学、南通市海安高级中学、南京市外国语学校2020届高三下学期第四次模拟数学试题2018年全国高中数学联赛安徽省预赛(已下线)专题07 奔驰定理与四心的相关运算及构造圆解决向量问题-【重难点突破】2021-2022学年高一数学常考题专练(人教A版2019必修第二册)
7 . 函数
的值域是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cc2dcf7f282a7c6723f101330b906f.png)
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名校
8 . 在正三棱锥
中,
,过AB的平面
将其体积平分.则棱
与平面
所成角的余弦值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ca81a916af88724337171b7a23ee17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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2018-12-04更新
|
177次组卷
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2卷引用:江苏省南京市第十三中学2020-2021学年高一下学期期中数学试题
9 . 已知
,
为锐角,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
____ .
![](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/83b5ea3395b72e89077fc99eb255a847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
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2018-12-06更新
|
569次组卷
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5卷引用:江苏省园三2020-2021学年高一下学期期中数学试题
江苏省园三2020-2021学年高一下学期期中数学试题江苏省苏州西交大附中、昆山中学、昆山一中2020-2021学年高一下学期期中数学试题2015年全国高中数学联赛新疆赛区预赛高一试题【市级联考】黑龙江省大庆市2019届高三第二次模拟考试数学(文)试题(已下线)专题2 三角恒等变换-学会解题之高三数学321训练体系【2022版】
10 . 函数
的值域为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ea9f4ddb402dfb047597a8bc43e6f9.png)
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