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1 . 已知集合
是满足下列条件的函数
的全体:在定义域内存在实数
,使得
成立.
(1)判断幂函数
是否属于集合
?并说明理由;
(2)设
,
,
i)当
时,若
,求
的取值范围;
ii)若对任意的
,都有
,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c8e4eb142751bf3e35b5c419115e52.png)
(1)判断幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8756b76b2fb3289cb0f5a38623d5e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80374f06a59d67e1235bd120d3baa39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16534214250c59605aae906eef0094c9.png)
i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f12ce5fc6401ba953229e4388f229b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
ii)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d9b1cca22323ced9b4ff504244cf32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f12ce5fc6401ba953229e4388f229b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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595次组卷
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6卷引用:四川省石室中学2017-2018学年高一上学期半期考试数学试题1
四川省石室中学2017-2018学年高一上学期半期考试数学试题1四川省石室中学2017-2018学年高一上学期半期考试数学试题2广东省汕头市金山中学2018-2019学年高一下学期第一次月考数学试题【全国百强校】江苏省南通市海安高级中学2018-2019学年高一上学期期中考试数学试题云南省大理下关一中教育集团2020-2021学年高一下学期期中考试数学试题(已下线)4.3对数(专题强化卷)-2021-2022学年高一数学课堂精选(人教版A版2019必修第一册)
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2 . 若函数
为定义域
上的单调函数,且存在区间
(其中
),使得当
时,
的取值范围恰为
,则称函数
是
上的正函数.若函数
是
上的正函数,则实数的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7131ba44460c9f6ace0957cfc6c94c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e122f785d5945454792370bb49a937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9764d20df647b8bb27d803f92af9016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700575aad4ef31eafeb6a93af3a69d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d434b9ff395453fe7e7fa1dbb96ca85e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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1922次组卷
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5卷引用:四川省成都石室中学2019-2020学年高一10月月考数学试题
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3 . 已知
,函数
.
(1)若
,求
的单调递增区间;
(2)函数
在
上的值域为
,求
,
需要满足的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7f23e7f20dd8bc65a4967cd306782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61110a37cdf2e4c5d6657d27baeb704f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9e47f0b9578473adce0fbeba72707c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d43eb5d13c51115c0ca3087bb0b50a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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4卷引用:四川省泸州市泸县第一中学2019-2020学年高一下学期第一次在线月考数学试题
四川省泸州市泸县第一中学2019-2020学年高一下学期第一次在线月考数学试题2017届福建福州外国语学校高三理适应性考试三数学试卷(已下线)《2018-2019学年同步单元双基双测AB卷》【文科数学A】第二章第一练基本初等函数与函数性质的应用(已下线)《2018-2019学年同步单元双基双测AB卷》【理科数学A】第二章第一练基本初等函数与函数性质的应用
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4 . 已知函数f(x)=2sin2(x+
)-2
cos(x-
)-5a+2.
(1)设t=sinx+cosx,将函数f(x)表示为关于t的函数g(t),求g(t)的解析式;
(2)对任意x∈[0,
],不等式f(x)≥6-2a恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a203d96e08717eb480e9ae4bcc35c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a203d96e08717eb480e9ae4bcc35c4.png)
(1)设t=sinx+cosx,将函数f(x)表示为关于t的函数g(t),求g(t)的解析式;
(2)对任意x∈[0,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a197fd4f34662734a2eb6d88c42d86.png)
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2016-12-04更新
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7卷引用:2016届四川省成都市七中高三1月第一次周练数学试卷
10-11高三·四川绵阳·阶段练习
5 . 已知函数
的定义域为[
,
],值域为
,
],并且
在
,
上为减函数.
(1)求
的取值范围;
(2)求证:
;
(3)若函数
,
,
的最大值为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56761d3f849d23e68f49250d4b5c7966.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/9b4ec0647f795d8c523ad68fd10d85c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5dc0f64bf468b7ca69de53be3f0161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdc2c4295fa595ff3a7ad70f01b2742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419f0563b875bb7cfb46d0fb05c895a4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d430f88795c454578fa640742bef7.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394f9eb7a674b162a3a8096703f0e3d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/203a05e6aa1b156258fa5516fffdee3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419f0563b875bb7cfb46d0fb05c895a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c02c449a1635f63b7c8dfa699ee093.png)
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