设函数
,且
对任意
恒成立.
(1)求
的值;
(2)求函数
在
上的最值;
(3)设实数
且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c755a1a4b5569db606c571092de6459e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29e9f5c87689d0b07f6c9a07ab98845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56cc31fd8c46328d565b6b0bb7f88803.png)
(3)设实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a3812672b553b66eb0184fec69541c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aec26e2dc5e1364af59aaa1da23f3c.png)
更新时间:2022-12-25 16:07:00
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解答题-应用题
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适中
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名校
【推荐1】在2024年高考前夕,合肥一六八中学东校区为了舒展年级学子身心,缓解学子压力,在一周内(周一到周五)举行了别开生面“舞动青春,梦想飞扬”的竞技活动,每天活动共计有两场,第一场获胜得3分,第二场获胜得2分,无论哪一场失败均得1分,某同学周一到周五每天都参加了两场的竞技活动,已知该同学第一场和第二场竞技获胜的概率分别为
、
,且各场比赛互不影响.
(1)若
,记该同学一天中参加此竞技活动的得分为
,求
的分布列和数学期望;
(2)设该同学在一周5天的竞技活动中,恰有3天每天得分不低于4分的概率为
,试求当
取何值时,
取得最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fed1be8b7e50f18cb90077d9fce8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ed2c9350ed98403e5d62f5c957ab6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
(2)设该同学在一周5天的竞技活动中,恰有3天每天得分不低于4分的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1f109f79547d6ae0d94339e689e8f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1f109f79547d6ae0d94339e689e8f7.png)
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【推荐2】若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d70266454df40256268b19b055a88.png)
(I)设
,在区间
上单调递减,求实数
的取值范围;
(II)设
,求
在
上的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d70266454df40256268b19b055a88.png)
(I)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d448a8528d9b792479eb51c0ec90fc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb49dbba01c4ff5f686ffc8828351b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(II)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902113e84715a7ab2ced2b7a9c0d5951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b77857e15ae11fc94a5e33bfc12d26.png)
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解答题-问答题
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适中
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解题方法
【推荐3】已知函数
.
(1)当
时,求f(x)的最小值;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(2)设
为整数,且对于任意正整数
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83e99119d426e266f76b858b0bfb1e5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8339e6f70847fc5c196d0b2fc3fc6d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】已知函数
,
.
(1)求
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(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf6f3bcdae205281edb429b1f4fa72a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a061ea685cf464a7807e5e0b6354df6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bf0995f32a13d0a9e423f3e88ab271.png)
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真题
【推荐2】已知函数
=
,其中a≠0
(1) 若对一切x∈R,
≥1恒成立,求a的取值集合.
(2)在函数
的图像上取定两点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee844c70ab064971860fb0a2b00acb3.png)
,记直线AB的斜率为K,问:是否存在x0∈(x1,x2),使
成立?若存在,求
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8a148cb7b6637fc8262bb0cb741b30.png)
(1) 若对一切x∈R,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6470c6a4349ea591ce2bbcd93199f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee844c70ab064971860fb0a2b00acb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0081c84666d57a8bcf61a1ab4d725fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f22fb2401b55ade9ac544443e143b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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解答题-证明题
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解题方法
【推荐1】已知函数
是定义在R上的偶函数,且
.
(1)求实数a、b的值,并用定义法证明函数
在
上是增函数;
(2)解关于t的不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf73cba44937bc227bed12cf19f12fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
(1)求实数a、b的值,并用定义法证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)解关于t的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aae171be56d79d5ffb98cde789cbcb0.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】已知函数
为奇函数.
(1)求实数
的值;
(2)若对任意的
,有
恒成立,求实数
的取值范围;
(3)设
(
,且
),问是否存在实数
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在
上的最大值为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc815d2be8740b73b830fabebb89cb1.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3993391fe16e7315c4d92af28c03fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e89cc290d57ba0089875721ae724dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2ce58ef7ae5570d5024d2b585ace74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e7930731eddbcfac592b808e9b698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6602b172fa321eacd584c338dee7bef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
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适中
(0.65)
【推荐3】已知函数
,
为偶函数.
(1)求k的值.
(2)若函数
,
是否存在实数m使得
的最小值为0,若存在,求出m的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff150d77714cefcf459c2649b32fb5cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af7267fa641fe998666f090bac90f6e.png)
(1)求k的值.
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57853e1fb281db1d070564b9fda16130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591af3758e7ccd076c832cb6d05b44d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
您最近一年使用:0次