已知函数
.
(1)若曲线
与直线
相切,求实数a的值
(2)若函数
有且只有1个零点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea400e6c5e28322f5b5c8f8522e1da8.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2023-03-07 20:47:11
|
相似题推荐
【推荐1】如图,O为坐标原点,点F为抛物线C1:
的焦点,且抛物线C1上点P处的切线与圆C2:
相切于点Q.
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181300150272/1572181306130432/STEM/cc40ac00d1a84fa8a81b0353b0482256.png?resizew=241)
(Ⅰ)当直线PQ的方程为
时,求抛物线C1的方程;
(Ⅱ)当正数
变化时,记S1 ,S2分别为△FPQ,△FOQ的面积,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181300150272/1572181306130432/STEM/cc40ac00d1a84fa8a81b0353b0482256.png?resizew=241)
(Ⅰ)当直线PQ的方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7ca47ea8b78dd4c0389eee8620d523.png)
(Ⅱ)当正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】已知函数
.
(1)若曲线
在点
处切线的斜率为1,求
的单调区间;
(2)若不等式
对
都成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6615f59575a76ac534adfe0e5a415671.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046325cc7b5ebc321b6b16b4056007d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】已知抛物线
,直线
与抛物线
交于
、
两点(
在
的上方).
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974093471080448/2974206084161536/STEM/c2b6c051-6da6-4fb6-b20b-17630b3a23de.png?resizew=129)
(1)若
过抛物线
的焦点,且垂直于
轴时,
,求此时抛物线
的方程;
(2)若直线
的斜率
,过点
作直线
的垂线
交抛物线
于另外一点
,当
,且
的重心落在直线
上时,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974093471080448/2974206084161536/STEM/c2b6c051-6da6-4fb6-b20b-17630b3a23de.png?resizew=129)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040d6732d32d552cb60f1a9430b67c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247650039d025c774155286e23058583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1417413a6f8d700919a544733c5f06fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed283a253b61df01f2a1cdc0cd8003f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617275be4b814b72a3e2c7da11ed0416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】已知函数
.
(1)若
,求
的极值;
(2)若函数
恰有两个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b785626ab16bc2f05388aa7d6decbe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cf35beeeb454cf20da4ce9c9d34773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次