已知函数
.若函数
的图象在点
处的切线与直线
平行,函数
在
处取得极值,
(Ⅰ)求函数
的解析式;
(Ⅱ)求函数
在
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1b5c9cb2c965d31be8cdacea1baa1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e564bb11bddea3a2e0970ca7b98467e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9c64ba837387d640de4b8e2191b1b5.png)
更新时间:2021-09-13 07:19:58
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解答题-问答题
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适中
(0.65)
名校
【推荐1】已知函数
.
(1)若
在点
的切线,与直线
平行,求
过点
的切线方程;
(2)设函数
在区间
内是减函数,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8aace1181da0149ff3c201995a853a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eed461026f69fe9ab2c5dc12af8ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63fd54892dac34151fda1489be3bd06.png)
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解题方法
【推荐2】已知函数
,其中
.
(1)若
,曲线
在
处的切线与直线
平行,求
的极值;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc7fe36c73bb4f8537e2ff2898cd380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
(1)若
![](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/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfc6b5b7ae63a330f0cd8593ee47338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b56128b51495702a230e2488cab9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d532e1d6683460f39214864f9a48e5d.png)
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【推荐3】已知三次函数
的导函数
,
,
,
为实数.
(1)若曲线![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/56fbaad75b7c49258729e7a2e76d5c3c.png)
在点(
,
)处切线的斜率为
,求
的值;
(2)若
在区间
上的最小值、最大值分别为
,且
,求函数
解析式.
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/1066d1ef96304c618b63283a3fb7a19e.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/8ab873bc24954c56b618ea41e09376e6.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/523cb88da5434131b9ce8f7290f05733.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/de842a6a92f64f9db056d10761989850.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/08438e768a0b4d6280bb6c7733e2dc8d.png)
(1)若曲线
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/56fbaad75b7c49258729e7a2e76d5c3c.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/1066d1ef96304c618b63283a3fb7a19e.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/7fb90ebd7f6e44dc8cdf48fc40f003d3.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/f5ec0ad831684e908a1d6e4c3c3a8624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/de842a6a92f64f9db056d10761989850.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/1066d1ef96304c618b63283a3fb7a19e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291d664e9ea8088c35bb6b0550f18675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c92628665f1c3325a0507d28fe0f6f.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/f8fab22c8dfe4c57b41d6efe97c5600c.png)
![](https://img.xkw.com/dksih/QBM/2010/9/19/1569836093292544/1569836098666496/STEM/1066d1ef96304c618b63283a3fb7a19e.png)
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解答题-问答题
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适中
(0.65)
名校
【推荐1】已知函数
在点
处有极小值
.
(1)求
、
的值;
(2)求
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c929ec662329f688d4986bc76ada9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
您最近一年使用:0次
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(0.65)
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【推荐2】已知函数
.
(1)当
时,求
的最大值;
(2)若
存在极大值点,且极大值不大于
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe304543c1081dc311965bb11a4dca14.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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【推荐3】已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)当
时,曲线
上存在分别以
和
为切点的两条互相平行的切线,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59560924a9637f966325e52e50ac549.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a671406a5442a3088a4ee1d064114a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb5e0977b1a3c23ccd96d296b76a56e.png)
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