2010·江苏盐城·三模
1 . 已知函数,
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e48d083295a18dbf2ba261145bd37fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe958fdf039b2e2c47d685b7b5bb0ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7703152796963fdc1696ebf3c2f70272.png)
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2 . 已知函数
.
(1)讨论
的单调性;
(2)已知
有两个解
,
①直接写出a的取值范围;(无需过程)
②
为正实数,若对于符合题意的任意
,当
时都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e05350ccacf6a3ad484df27d879805e.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f2d2e41b038f29ecd140ff791ddbf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
①直接写出a的取值范围;(无需过程)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7ea8007570536864a5cf4b00a8d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129c56e1b0075b1d4a1fa34b2b13f108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6107be46de0bb91fcecb65b9ee2a.png)
(1)若1是
的极值点,求a的值;
(2)求
的单调区间:
(3) 已知
有两个解
,
(i)直接写出a的取值范围;(无需过程)
(ii)λ为正实数,若对于符合题意的任意
,当
时都有
,求λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6107be46de0bb91fcecb65b9ee2a.png)
(1)若1是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3) 已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df628874faa615d0cf49e38c6b9968a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(i)直接写出a的取值范围;(无需过程)
(ii)λ为正实数,若对于符合题意的任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7ea8007570536864a5cf4b00a8d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafb39935a3b8eee7b2529063ab3fda6.png)
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2022-10-30更新
|
1621次组卷
|
7卷引用:微专题09 隐零点问题
名校
4 . 函数
.
(1)若a=1,求y=f(x)在点(1,f(1))处的切线方程;
(2)若
恒成立,求a的值;
(3)若
有两个不相等的实数解
,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b93a4f5b20d30169bd85e5c82cf50da0.png)
(1)若a=1,求y=f(x)在点(1,f(1))处的切线方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ca4c9087d7b6603737d6354a4bf936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f8062ae945803fa02f0fac5c4ba2f9.png)
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2018高三·江苏·专题练习
5 . 已知函数
,
.
(1)若曲线
与
在
处的切线相同,求
的值;
(2)求证:
;
(3)若方程
有且仅有一解,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341729ef61846ac958d835369650d871.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e50e9386b782eec039d99111424a4d.png)
(3)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df2cf24698766c54e7a7c61d4ad2bfb.png)
(1)当
时,求函数
的单调区间;
(2)若方程
在区间
上有实数解,求实数a的取值范围;
(3)若存在实数
,且
,使得
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df2cf24698766c54e7a7c61d4ad2bfb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac0a38f359dd17a73c3e9f7bbbc5be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(3)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e15f0b1bdff81fe56227d1141f8bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87027136ff548fc504dea240e75cea86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc9edb22a22dd339bf9f169e6642169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe357c4d3077bdf6f6f88921a234bc1.png)
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2014·江苏南通·一模
7 . 已知函数
.
(1当
时,
与
)在定义域上单调性相反,求的
的最小值.
(2)当
时,求证:存在
,使
的三个不同的实数解
,且对任意
且
都有
.
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/2dd8cf64b6904c409b0626364d3f5cde.png)
(1当
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/798aad047a9344a984e27afd86bc47cb.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/274a5cba98ec4744a1167a37dfe6cf19.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/f830c331aea94ee6b130643441db9056.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/1500db7870d44a09ba84226c6491e1b1.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/5cc8f5c33e9a4fb090452b3e9db65d61.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/352b57f5d3b1488e9ab698a6669e0ab7.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/03442e2e9a0f4202850a377cbda8c59e.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/019762b744684e778fca9db01dc243f2.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/2ad5a2a811094871810de9ed8896327f.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/05976cf0e61243368d3d06559327d38a.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/c250f4b2847643f6a9b3a121469b4bad.png)
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