已知函数
在
时取得极值且
有两个零点.
(1)求
的值与实数
的取值范围;
(2)记函数
两个相异零点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a97e2e4c759c34fc6fb7a9a1bc3c514d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c81965854dbe52a513241f196edf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3661dbd3b2c578c685e6a11a4102ddd.png)
更新时间:2019-06-17 08:51:47
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】设函数
,其中
.
(1)若
是函数
的极值点,求a的值;
(2)当
时,求函数
的单调区间;
(3)当
时,设函数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2789aa3ed49a69c3c68e590ee9950a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3cdc842b6aad995999de2712688c56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a06acf17d7c28fa264c03224226951b.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】设函数
=[
]
.
(Ⅰ)若曲线y= f(x)在点(1,
)处的切线与
轴平行,求a;
(Ⅱ)若
在x=2处取得极小值,求a的取值范围.
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095907847159808/2100913127284736/STEM/cb943aedb15d4a168e2e3bac16c6ac1d.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095907847159808/2100913127284736/STEM/892d4b13c23546c1900bb578f4f4cd51.png?resizew=122)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095907847159808/2100913127284736/STEM/841a640d57db475da919666efdb4f276.png?resizew=11)
(Ⅰ)若曲线y= f(x)在点(1,
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095907847159808/2100913127284736/STEM/96015a31f4354a8a88511e6f2c4fe6f8.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095907847159808/2100913127284736/STEM/e0fa59d0e69f493da11dbb075cdc45b1.png?resizew=6)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095907847159808/2100913127284736/STEM/cb943aedb15d4a168e2e3bac16c6ac1d.png?resizew=20)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(Ⅰ)求曲线
在点
处的切线方程;
(Ⅱ)当
时,证明:
;
(Ⅲ)判断
在定义域内是否为单调函数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbc1448734da4134198fea9fbf51d27.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a14e59cf0da917b3855f99aa25f074c.png)
(Ⅲ)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】设函数
,曲线
在点
处的切线方程为
.
(1)求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a460de4b64a5154fca70b4e1ec8ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e154ef2a77f2ac3dcc1ff6df5ab012.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91100d6b3b151cc6ddfe60f106ec877.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
,
.
(1)讨论
在区间
上的单调性;
(2)判断
在区间
上零点的个数,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2ba2dafeecc02a42de34ea87e2b019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9dc5f8f4a8a554c32e337ae39afd99.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3f81841df5843d6058e09161bb9c21.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2728a4ef67b88090a84c1e5746c7f6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15641191c56b4df40e30f0b10c30243a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】设函数
.
(1)当
时,求
在点
处的切线方程;
(2)当
时,判断函数
在区间
是否存在零点?并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81cd9fe7319a902e46998c3f8bdb79f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73bd7e3dd1c369b14800ae499999fe27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b3176728ac33660eaa5f7de5839980.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】已知函数
.
(1)若
,求函数
的图象在
处的切线与两坐标轴围成的三角形的面积;
(2)若函数
有零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0731ce1b1890ab17416d07a724fe5f3d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次