已知函数
.
(1)若
是函数
的一个极值点,求
的值;
(2)若
在
上恒成立,求
的取值范围;
(3)证明:
(
为自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fe925be220a97651d0801298864e51.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2019/9/16/2292180442800128/2292612282253312/STEM/35f4181a4fd74afe89f7966ee1a77633.png?resizew=35)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/2019/9/16/2292180442800128/2292612282253312/STEM/20222c843211435da06e62a19f9ba341.png?resizew=12)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://img.xkw.com/dksih/QBM/2019/9/16/2292180442800128/2292612282253312/STEM/e83dfc8aabf54b74831586ee7ebffd23.png?resizew=43)
![](https://img.xkw.com/dksih/QBM/2019/9/16/2292180442800128/2292612282253312/STEM/b1b1522995de40278d19af4755b0b39a.png?resizew=12)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9ad5c2915efd21bab59596131e66af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
19-20高三上·黑龙江·开学考试 查看更多[4]
黑龙江省牡丹江市第一高级中学2020届高三上学期开学检测数学(理)试题(已下线)大题专练训练41:导数(证明数列不等式2)-2021届高三数学二轮复习(已下线)第39讲 指对函数问题之指数化与对数化-突破2022年新高考数学导数压轴解答题精选精练(已下线)第34讲 估值问题-突破2022年新高考数学导数压轴解答题精选精练
更新时间:2019-09-17 12:34:32
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解答题-证明题
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(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09925c4fca81491e2cdcce0060b88f0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661e3f38c635165582128b423b80adb6.png)
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c08bb105382e128661954bf0ad645a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da83493c1af70d49565097e6a12f7a23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4b53217cdd882474c83a54bf9e4fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
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【推荐2】已知函数
(
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187c21027ff08411931d32c530b64fd3.png)
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(2)当
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【推荐3】已知函数
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(1)若
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(2)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b78ccc2ef147d41adc50cb7fa57786.png)
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名校
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【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65734d71ecf7273e808ac300e82e0f2.png)
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ded20b75676abb72c5598c4e77370b.png)
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