已知函数
,设其最小值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(1)求
;
(2)若
,求a以及此时
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdac28c4c4436ae735bbf02271bb29d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982ecaa2793a1b8fc2c4596f3b9a506c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2019-09-18 00:09:31
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解答题-问答题
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较难
(0.4)
名校
解题方法
【推荐1】已知函数
是定义在R上的偶函数,且当
时,
(
).
(1)当
时,求
的表达式:
(2)求
在区间
的最大值
的表达式;
(3)当
时,若关于x的方程
(a,
)恰有10个不同实数解,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d3cd6bbe8afccf075ded3241497e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1987ecbd076d89da5ef1e2561d79d857.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b1e7282492a76096f58f687f1b0459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
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解答题-证明题
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较难
(0.4)
【推荐2】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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名校
【推荐3】已知函数
,将
的图象各点横坐标缩短到原来的
,纵坐标伸长到原来的2倍,然后再将所得函数图象向左平移
个单位后得到
函数的图象.
(1)方程
在
上有且只有一个解,求实数
的取值范围;
(2)实数
满足对任意
,都存在
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b923078510697d5f7f9ea392eb76dd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(1)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35afd992010d9a310ecef5e1b101e962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecff4475e063dfcb5d64e542a20ef12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33890c6b0bf167514d44139d9dca0154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6ec5791f0789d829deb802accbdc98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370a0d814bd5d7d280d41355338afa7f.png)
(其中a为常数)向左平移
各单位其函数图象关于y轴对称.
(1)求
值;
(2)当
时,
的最大值为4,求a的值;
(3)若在![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb7475ff3f069ab69553e1aa2771a9c.png)
有三个解,求a的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370a0d814bd5d7d280d41355338afa7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93778ac16acb542c259b9c4c49b410b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb7475ff3f069ab69553e1aa2771a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
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(0.4)
名校
【推荐2】函数
(其中
)的部分图象如图所示,把函数
的图像向右平移
个单位长度,再向下平移1个单位,得到函数
的图像.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/e00a8d86-d49f-4666-82eb-e4e6971073ac.png?resizew=145)
(1)当
时,求
的值域
(2)令
,若对任意
都有
恒成立,求
的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec89c3bc454d209007c2b29baeeb3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bb4e9c9147737ddde1518c3f3406b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/e00a8d86-d49f-4666-82eb-e4e6971073ac.png?resizew=145)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4485bf94537b08547a887c6470693bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0212700c9640b70d970224f7772709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b07832e6267543e940d955a13f94ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次