名校
1 . 已知函数
,其中
.
(1)讨论
的极值点的个数;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dabc8ea9a0cd395d91f1cc247145aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0923451106e893637b0223d73b66d976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
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2021-02-15更新
|
930次组卷
|
2卷引用:江苏省徐州市第一中学2020-2021学年高三上学期期末数学试题
解题方法
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5220c1d29955df47343122a463c46a92.png)
(1)若函数
区间
上存在极值点,求实数
的取值范围;
(2)当
时,不等式
,恒成立,求实数
的取值范围;
(3)求证:
(
,
为自然对数的底数,
……).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5220c1d29955df47343122a463c46a92.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5898e7d08ab9c447f45bc315176f6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0aab66798e1f60dc23c693c14e5a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f906a6300ee7f37065d38c53f259df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405dfcca25b76af059fb4c308983eae.png)
您最近一年使用:0次
名校
3 . 已知单位向量
、
夹角为60°,向量
,
,函数
,函数
.
(1)求出
并解方程
;
(2)设
,
,证明
,求出
;
(3)设数列
中,
,
,
,求
的取值范围,使
对任意
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8315ec34019d719771152be2252106e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf39ca3294f5520518dd4f1c0609876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2795c23d9ae250f97272fe45647b619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c68ae32a33b25a7da4a22375aeb97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5acd92c11b40a6a7df2862ee780fd19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d178399b685d411fc08169d8e4dd102.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e4ba6d5f2eea68442def1911957fe.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998d1117b68d345ad988e86d1ec7724b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acec5abbaf06572719eb3e438cbee96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7268ee120ea28a987f9e0eebf859f067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84323e71222a3dd2ddf73bc9c654c01b.png)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8cc56056a35396d9b94bee47a5b17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c378b096c02a762afd59dfb0a3574e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bc84f50a043f6bfb4b8e35460a1fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
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