已知函数
,
.
(1)试讨论f(x)的单调性;
(2)若对任意
, 均有
,求a的取值范围;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfe4547ff0a71d1a27a8388eaa12bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)试讨论f(x)的单调性;
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a173a1aa3c129af32230d1b762d659ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e38a5aa055e0f44c5209a0b1efc9e3.png)
21-22高二下·江苏·阶段练习 查看更多[5]
江苏省南京、镇江市部分名校2021-2022学年高二下学期5月学情调查考试数学试题(已下线)2022年全国新高考II卷数学试题变式题13-16题(已下线)专题08 证明不等式问题2(已下线)2022年全国新高考II卷数学试题变式题20-22题湖北省沙市中学2022-2023学年高二下学期5月月考数学试题
更新时间:2022-06-01 11:28:45
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【推荐1】已知函数
.
(1)讨论
在其定义域内的单调性;
(2)若
,且
,其中
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d827f87e10a7848797480161dcf3cc.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96fa70dd1d9e02505ac96e6de24ddc4a.png)
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名校
解题方法
【推荐2】已知函数
.
(1)若函数
在
上单调递增,求实数
的取值范围.
(2)记函数
,若
的最小值是
,求函数
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82af915287e8b9a697172fd57fa23253.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c4e62b0479d702e5bbc9123c12ac89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐3】已知函数
.
(1)若函数
在
上单调递增,求
的取值范围;
(2)若
,证明:当
时,
.
参考数据:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d776483024522a057605a8bd203e7164.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6f5dc8b658d75ccdd30e4ad5c5b199.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e3ce576f0766f29349db973fc22eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
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解题方法
【推荐1】已知函数
(
为常数).
(1)讨论函数
的单调性;
(2)若函数
在
内有极值,试比较
与
的大小,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061e204a8bb1e2032069e6c0c39572bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8257be0efe83f4efa240984fe7f20841.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e291eb3e92d13e827bb011f62dca70b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b52fba05677343daa1d9e8cffc40d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e200b5722f1d8baf2bd205f524361a.png)
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【推荐2】设
且
恒成立.
(1)求实数
的值;
(2)证明:
存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6981a267eda177b308d4400aa3b789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](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/99bf35ae2933898fb81a768a114ade4d.png)
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【推荐1】已知函数
.
(1)若直线
过点
,且与曲线
相切,求直线
的方程;
(2)若
时,
成立,求整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aababad995ae028293ca84e9d6562f32.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa71aa2ea224669698850108751a71a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fad1dd76d5b72f10f5bb62693a2996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a5e95d2c175ade2273254a835d8f35.png)
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【推荐2】已知函数
.
(1)若
,求
的单调区间;
(2)证明:(i)
;
(ii)对任意
,
对
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345721816b8153ed40ad4de0c44e6837.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191d9381c4f252fbb5553ba72462d0aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4123b4b9e76a410c64a08c0a8c134664.png)
(ii)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88f040c4b0dcd80fde0f778d4909a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30c9ffa4052e3a8eb99846dfa4277fb.png)
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【推荐3】设函数
,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
(1)证明:
,
在
上单调递增;
(2)若
对
恒成立,求整数m的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8add6fc844e6bf0066c9834a89cedcac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26817f7da8fc76fae147ea1198d6817a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1153c009c5ca743460d670e5622393.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd9652d4db04fe06455468219a3ee9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
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【推荐1】已知函数
.
(1)讨论函数
的单调性;
(2)若函数
有两个零点
,
,其中
,记
,证明:
随
的增大而增大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fefdf8dbc3afdf6a0e341c7bcda3a9.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e818c639e3c068d90702fd55872214f5.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d3ed235c91facf2bfd9922805ed74a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450398974b1561ca801e102e16df6789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
【推荐2】已知函数
,
.
(1)讨论
的单调性;
(2)若函数
存在两个极值点
,
,且曲线
在
处的切线方程为
,求使不等式
成立的
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474aff7404a6161ec947e0dbbb78331e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69819ab7daa8faa54430526f8bbd108b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15c2171c1be9ec394494ad822a048d.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/4f5a90aeba435af22d6bcdb7b91650b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5399349e742ed08f6c79f7b7dd2fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/112d3c32a1a43115e1f57a7c910a7840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85eb05d05d75155f9ad140380dfb5ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐3】已知函数
,其中
.
(1)当
时,讨论函数
的单调性;
(2)若
在
上恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3fdf6da9a5126e71d56311cf8003733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08290af79305df59bc0a1fc2b7c4f7c5.png)
(1)当
![](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/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3368388525e30cb7179909b03184eb.png)
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