若函数
在区间
上的值域为
,则称区间
为函数
的一个“倒值区间”.定义在
上的奇函数
,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396b3c4d14b9e9b64434add3c2e8874.png)
(Ⅰ)求函数
的解析式;
(Ⅱ)求函数
在
上的“倒值区间”;
(Ⅲ)记函数
在整个定义域内的“倒值区间”为
,设
,则是否存在实数
,使得函数
的图像与函数
的图像有两个不同的交点?若存在,求出
的值;若不存在,试说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db355ff4eb6f6b79670b74fb0b6808af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3396b3c4d14b9e9b64434add3c2e8874.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
(Ⅲ)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79910ce28ad199c332a17b632f2d8916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999d6123b771ecbc1fe861c5242865af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2019-06-06 00:07:04
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相似题推荐
解答题-问答题
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较难
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【推荐1】若函数
同时满足:
①函数在整个定义域是严格增函数或严格减函数;
②存在区间
,使得函数在区间
上的值域为
,则称函数
是该定义域上的“闭函数”.
(1)判断
是不是
上的“闭函数”?若是,求出区间
;若不是,说明理由;
(2)若
是“闭函数”,求实数
的取值范围;
(3)若
在
上的最小值
是“闭函数”,求
、
满足的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
①函数在整个定义域是严格增函数或严格减函数;
②存在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f15eb7cd066e13367998a2da2653976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8d15bcdb0c20c9abee93881d68eb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957cc2dbad1413bcca92eda166e73450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77b5c9b61c325ec4d9dbc39683039ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d7454ac738bf964b74deca7794e8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91eb1a74ed4eb789a5cf6bf0d08900a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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【推荐2】设
,函数
.
(1)若
,判断并证明函数
的单调性;
(2)若
,函数
在区间![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
上的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f8ca3916770d199f7edd59b1722a86.png)
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27b285c7ddbb366a8f1a183e2194ac1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475963eea170ff0bbdaf2f0b706dfc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f8ca3916770d199f7edd59b1722a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06038810f4b137ab903256336b433b8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8573eecbc29f522671b3892ec406c50b.png)
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【推荐1】已知关于
的函数
,
.
(1)若函数
是
上的偶函数,求实数
的值;
(2)若函数
,当
时,
恒成立,求实
数的取值范围;
(3)若函数
,且函数
在
上两个不同的零点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752b9d93cc49fb2b099470bddc6ba0b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56272947af0751a3b85c9bccfd223b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b14d0c440da20a2472608f1eec52eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a2c01ac2a7f6ad7e03cb7a61daefab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21ca449ce23de899b57dfbfbd19b560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad80c4ba8c593c5edfb167ae4a5f50f5.png)
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解题方法
【推荐2】已知函数
(k为常数,
).请在下面四个函数:①
②
③
④
中选择一个函数作为
,使得
是偶函数.
(1)请写出
表达式,并求k的值;
(2)设函数
,若方程
只有一个解,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7902ed86e50f88ec3fe910f13a33caff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbcd13733e4a224804dd78a7e4cf12e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39883014f50f365848459094ab297367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5248cb6a1369cbfd41e83e9360daf191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f3a6abfb18da1267e48117ddaabf20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)请写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96eda540371ec94746061100db099c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d893cb57ec3daa0d8282ce47e8b8e1.png)
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解题方法
【推荐1】设
,且
.
(1)求
的解析式;
(2)判断
在
上的单调性并用定义证明;
(3)设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbb39c1c994df1bcc277fed63fce574.png)
在
上有两个不同的解
,求集合
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc4e3775c850f1c1804f9eb7a70153a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb827f46178762d5293fd818a6db0e43.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e3d25c9f38a3cf745fed1ce3297be.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbb39c1c994df1bcc277fed63fce574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c238ce891f370e22aa72ec56a108348d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b85da66243efd91e7c606c42f17da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a1b81be655b7177a9644520b18208e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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解题方法
【推荐2】已知
,函数
.
(1)若
,求实数a的取值范围;
(2)设函数
,讨论函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac434e7a860859b7ae4f1ccddf0c369.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d4da2b54bf28ff8346a73e11065459.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90421c5ddb13513dd1e5244da67411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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【推荐3】双曲函数是一类与三角函数类似的函数,在物理及生活中有着重要应用.称
为双曲余弦函数,称
为双曲正弦函数.
(1)若关于x的不等式
在
上恒成立,求实数m的取值范围;
(2)函数
在
有2个零点,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a7c1d3681898e25187a896aeb0c8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0718c04bdf70989bcc90b902671a692.png)
(1)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7028648e74d24563e54a200c2b918342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e001b0c3af613e67c5090c6d8795aed7.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffac7b770b40e63972eaec494d15ef34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7b531ca02bb032e63ab7df9ee9e068.png)
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