1 . 对于函数
的导函数
,若在其定义域内存在实数
和
,使得
成立,则称
是“跃然”函数,并称
是函数
的“跃然值”.
(1)证明:当
时,函数
是“跃然”函数;
(2)证明:
为“跃然”函数,并求出该函数“跃然值”的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851c68ef2e0703706f3b528daa902eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79faaa73be5986e48442dcd5e80bc0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189e0f9d87a2d5fc08838ef19dee6d6b.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1a851f8e1dcaa446c0afa18656dfa8.png)
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名校
2 . 帕德近似是法国数学家亨利·帕德发明的用有理多项式近似特定函数的方法.给定两个正整数
,
,函数
在
处的
阶帕德近似定义为:
,且满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46eaf1cdc0ea6f6b18e8fba22ee7ae2.png)
.(注:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51793a343298909a499b0b150660ccb.png)
为
的导数)已知
在
处的
阶帕德近似为
.
(1)求实数
的值;
(2)证明:当
时,
;
(3)设
为实数,讨论方程
的解的个数.
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16563cfb206d0394cac2a0c2595dda6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46eaf1cdc0ea6f6b18e8fba22ee7ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4baac3118da93995e49b29a5d377e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca214aa6276b96d67a451c3fdbc59b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51793a343298909a499b0b150660ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385c9d5f9d6c2c720dd99273021cafd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea7fa65b493fc1bdf84e16d39ae07d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35dd621776dee688a0175a1abe39c258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40765d09390381658d5b4dc0160366cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8de781718020ed3f99538b8e25d6186.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cccba081685984454ee4fa955dc4f7ea.png)
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2022·全国·模拟预测
解题方法
3 . 已知函数
,
.
(1)讨论函数
的极值;
(2)当
时,若存在q,使得不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110decc4b1ffec264bcedd2e7c403ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a519cd095a31259873999be9a537ee2e.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194b8ab194c7d299d5c3e0f09ec18384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e653994b245fbdc2ac3458429c65e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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4 . 已知函数
.
(1)若
的最小值为0,求a的值;
(2)若不等式
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34195963035bd029e05bc1bf5bf93163.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706bce32d8fd4b45a80f162929d80012.png)
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2022-09-06更新
|
340次组卷
|
2卷引用:湖北省荆州市公安县第三中学2022-2023学年高三上学期9月月考数学试题
名校
解题方法
5 . 曲线的曲率定义如下:若
是
的导函数,
是
的导函数,则曲线
在点
处的曲率
已知函数
,
,曲线
在点
处的曲率为
.
(1)求实数
的值;
(2)对任意的
,
恒成立,求实数
的取值范围;
(3)设方程
在区间
(
)内的根从小到大依次为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994bbcf39f4dda34e877b21af71f103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6635a24bf10dd5f951924cd8111802bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994bbcf39f4dda34e877b21af71f103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fa72fc4959804b944bfaa93dbe2b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07ce50009a2bb6f6358431c507e14e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb87668d7dc84f470182b32a1790a359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75f521cf86c1dd503870fa5121fcd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e7417618db2a984a0b1637b03e4174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c1c1c885e28ef61bf47d1a61a847bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c62477c656febc9646b305a64484ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)设方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29fe377ffb047b7814370ac2785257f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff9f6f21d68ee6a07070e40cf93b208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c032d50e3dde09f453adc34a1c5353ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c642de19a879df2e18cc5c5c44bd5b07.png)
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6 . 设函数
.
(1)若
,讨论函数
的单调性:
(2)若函数
恰有
个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ec205afb636b204a23a887ecc4aeeb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3465a511110e06edb2fbe71ad6054a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
7 . 已知函数
(
,
为常数)在
内有两极值点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(1)求实数a的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd494712311c96e83a33a5f6a754d2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(1)求实数a的取值范围;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92aadcc1e8dd35d5e3a2333b7dcdbb46.png)
您最近一年使用:0次
2020-03-05更新
|
546次组卷
|
2卷引用:湖北省荆州市石首市第一中学2019-2020学年高三上学期11月月考数学(理)试题
名校
8 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
时,讨论函数
的单调性
(2)当
时,
,对任意
,都有
恒成立,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e892a8a6a8f013b0397751d89f6c8f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7cce117124d5b3867ebdd66ebaa6e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb99b13ce4b48c02e45f66da3946d9a0.png)
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2020-02-21更新
|
1382次组卷
|
4卷引用:湖北省荆州市石首市第一中学2019-2020学年高三上学期8月月考理科数学试题
9 . 已知函数
,在
处的切线方程为
.
(1)求
的值
(2)当
且
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dddbc3af897e179102381f714e9023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a470c02b9ce962252644a6b3754f8f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/649117a986978cb811617666300b4464.png)
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