已知函数
对任意实数
,恒有
,且当
时,
,又
.
(1)判断函数
的奇偶性,并加以证明;
(2)求函数
在
上的最大值;
(3)若不等式
在
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b870f90b3e6cdac664e2743c71e7e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91288f3376f00e3e4e37376c14f5c81d.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99bebf8db0d314aacb2cb1f09bf48c.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e8c8ab9f1c30377a05ba1b3852d83b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-11-10 21:43:24
|
相似题推荐
解答题-问答题
|
适中
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【推荐1】已知函数
.
判定并证明函数
的单调性;
是否存在实数m,使得不等式
对一切
都成立?若存在求出m;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048a92d0e1ba3b07b473cb74e092e6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2be21e69328d3430e405af2bb8546c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f1a3feca6218955446108ebad0a524.png)
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【推荐2】已知函数
.
(1)若函数
, 判断
的奇偶性并加以证明;
(2)当
时, 先用定义法证明函数
在
上单调递增, 再求函数
在
上的最小值;
(3)若对任意
恒成立, 求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d2149738bc31036c4d102b4f43ceb3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61f235c3a4f5c62f85b5eaccdd38d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03db4ea1dcb63b22cf4e917df5db581e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85eb74dfeaa42829b8b34b666e885be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】①
;②
为偶函数;③
的图象经过
的图象恒过的定点.从这个三个条件中选一个补充在下面问题中,并解答.
问题:已知函数
,
且 .
(1)求
的解析式;
(2)判断
在区间
上的单调性,并用定义证明;
(3)解关于
的不等式
.
(注:如果选择多个条件分别解答,按第一个解答计分.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e85d705d8e098378efa522204ed01ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0df6dcea494c31afdfaf43286ff98e3.png)
问题:已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa75f3d60cf22f5db34abc0aee3e4d45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e37c35e33ffa1a55a0693ae2319da91.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d65bdc820ab87b9a7909d2be591abec.png)
(3)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ec6781c707aba89372debcf737f7d6.png)
(注:如果选择多个条件分别解答,按第一个解答计分.)
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【推荐1】已知定义域为(-1,1)的奇函数f(x)满足f(x+1)=f(x-1),且当x∈(0,1)时,
.
(1)求f(x)在区间(-1,1)上的解析式;
(2)若存在x∈(0,1),满足f(x)>m,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbd9e52b79fb84c320dc522e13d4f0b.png)
(1)求f(x)在区间(-1,1)上的解析式;
(2)若存在x∈(0,1),满足f(x)>m,求实数m的取值范围.
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【推荐2】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9a17473fba8249a0e8972efacf0573.png)
(1)判断并证明
的奇偶性.
(2)证明
在
内单调递减.
(3)
,若对任意的
都有
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9a17473fba8249a0e8972efacf0573.png)
(1)判断并证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9a17473fba8249a0e8972efacf0573.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9a17473fba8249a0e8972efacf0573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5877b36b0def7389b8fb66e8491644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5223ece2f8f76850c49e2505304532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bec2b5d68a56315b5c84adea9e35b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐3】设函数
对任意
、
都有
,且当
时,
.
(1)证明
为奇函数;
(2)证明
在R上是减函数;
(3)若
,求
在区间
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee77412e89c659e78054fa6f192b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99bebf8db0d314aacb2cb1f09bf48c.png)
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【推荐1】已知函数
(
>
,且
).
(1)判断函数
的奇偶性;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c317e6b6bfade7378dc0059c4fc0fc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
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【推荐2】已知函数
的定义域为
,对于任意的x,
,有
,且当
时,
.
(1)判断这样的函数是否具有奇偶性和单调性,并加以证明;
(2)若
,
对一切
,(其中
)恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773932788bfccf3f2a43207a159c33c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ce23d4f9f61a8b1f99d11f4cd2c1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)判断这样的函数是否具有奇偶性和单调性,并加以证明;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0955df5632cae482804bd29a1211d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9e70c842c6e50f89e1fab0f633c24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a311fe15043b66dddb23fb5a233fbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546bf2ccabfb49c99472445843939226.png)
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解题方法
【推荐3】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f1a326456ba10c718efdcf7d525e6a.png)
且
.
(1)若
,判断
的奇偶性和单调性;
(2)若
,求使不等式
恒成立时实数
的取值范围;
(3)若
,
且
在
上的最小值是
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f1a326456ba10c718efdcf7d525e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e54332de095f752d0ee48e58d90517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d8742c296a7949b598114a34c51f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103b6e926aa13321a82b2d57b5844a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fbec93189276445b83c6df4e9f4866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683a34e929399278f319421486390cd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】已知函数
,
.
(1)讨论
的奇偶性;
(2)当
为偶函数时,求使得不等式
恒成立的k的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fac3d3bf0578b15b75296323e35cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351a282cf4bde27e62660f9a694ef6df.png)
您最近一年使用:0次
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解题方法
【推荐2】已知函数
.
(1)用定义证明
是
上的增函数.
(2)是否存在m,使得对任意的
恒成立?若存在,求出m的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b586d5da50edf2b5d624b1f3368570eb.png)
(1)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)是否存在m,使得对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce5e41c8ad37efd3b0f1d07423a7ea9c.png)
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解题方法
【推荐3】已知定义在
上的函数
是偶函数.
(1)求实数
的值;并判断
在
上的单调性;(不必证明)
(2)若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b95119270bdffc123cd3dc871513a6f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce36e25913a82a70f11554e8e63e62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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