已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf57022897780de0508c5d1789d183c.png)
(1)求函数
的极值;
(2)求函数
的单调区间;
(3)判断函数
是否存在公切线,如果不存在,请说明理由,如果存在请指出公切线的条数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf57022897780de0508c5d1789d183c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca08df2fd4c0270dbc65ca8492f6b9c.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b98fe84de011c03c19c04e955cdf205.png)
(3)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
更新时间:2020-06-03 20:58:15
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相似题推荐
解答题-问答题
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解题方法
【推荐1】已知
是函数
且
的零点.
(1)证明:
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a54cd48804ba1e7b6267c88bf84bf0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2be31d987108fba76dbca933b92d8c.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f75c4dc3af79a53e464e3562fd6b56.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40751f01acfafe1a6232bc49bc0d67f0.png)
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解题方法
【推荐2】已知函数
.
(1)证明:函数
在区间
内存在唯一的极大值点
;
(2)判断函数
在
上的极值点的个数.
(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba203c4c148c7948ec1faaa64f92e101.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9e7c9705f6c58529cdcf7d3624455e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8ec0ccdb6db6fbaeb1172e281ec22f.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d73bcda1a31b7a8760ab3dd1363be07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d93f072d5da2f0f2b590e353469ee83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ee43974961431f54966d0b25027c51.png)
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【推荐3】已知
,
.
(1)讨论
的单调性;
(2)若
,
,试讨论
在
内的零点个数.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422d30a743e408c4712d9cdf96ae2459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a003543fa5824e2a0a7a406e64c6d045.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164e752e2711294fdaa037aac4620b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083479b94380e8d659eff92d10a1989d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7010397d58ddc41effcbd9bbd4d19cda.png)
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名校
【推荐1】设定义在R上的函数
,当
时,
取极大值
,且函数
的图象关于原点对称.
(1)求
的表达式;
(2)试在函数
的图象上求两点,使以这两点为切点的切线互相垂直,且切点的横坐标都在
上;
(3)设
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d4d64fd5bc2c22835089184f7e7397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)试在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35e84fd71f12b97bdceb2b26edaf96c.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cf9968e37afdfe1c187d74b2be9901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2b7a84d4ed7f8fd5a74a91dadd112d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d046a97cade9f388c2331c4c65867bd5.png)
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【推荐2】已知函数
.
(1)若函数
的最小值为
,求
的值;
(2)设函数
,试求
的单调区间;
(3)试给出一个实数
的值,使得函数
与
的图象有且只有一条公切线,并说明此时两函数图象有且只有一条公切线的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc077a03fccc7a31ceba186b477a014.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4acc891e024b77f174039085580e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a5e2d96cfd76c4a5281e9e05cf4c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)试给出一个实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dad8d79b18e8471a10b8a4028e841b4.png)
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【推荐3】已知函数
.
(1)当
时,讨论函数
的单调性;
(2)当
时,求曲线
与
的公切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3b9097cac2780bf022760c39de2abc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
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解答题-证明题
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【推荐1】已知函数
.
(1)求函数
的单调区间与极值;
(2)已知函数
与函数
的图象关于直线
对称.证明:当
时,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c107fb2e867b1d8ed01ec2831b6d16c3.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
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【推荐2】已知函数
.
(1)求函数
的极值;
(2)若函数
的图象在
处的切线的斜率为
,
在区间
上不是单调函数,且当
时
不小于
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908ba661c17927256e32eaa7f240045c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d2b76e46abbc9ecc4ba812eb2d29f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cc4d3e1a42155f19a21f252335b135.png)
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【推荐3】已知函数
.
(1)判断
零点个数,说明理由;
(2)是否存在整数
,使得直线
与函数
的图像有三个交点?若存在,求出
的所有可能取值;若不存在,说明理由.(参考数据
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb76510fa222991f16bd9d41e648217e.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5277850fb2f12a5115aac51e9dac193f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
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【推荐1】已知函数
.
(1)讨论函数
在
上的单调性;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fdb851dc97c4ad46840967fb55d737f.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af55ff2f6777792548ba5169e5b6186c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】已知函数
,其中
.
(1)若
,求
的单调区间;
(2)已知
,解关于x的不等式
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5ced9230a9cc4142f40dfc307aee06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24fc88d47f3353c060e85b445766edc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04bbcc3eb28e550b30e7ba6eaa09fe8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d3b1a2f3803f5bc4ef054341a08404.png)
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