已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
在
处的切线为
,求实数a的值;
(2)当
,
时,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c20b3930c4a4d6395293c2adeefcfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad55adc3c5726c6f9e7744d1cc92115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48350c9f896c18a64f27867ca81c9be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450eaad34448ac500444eccae0e414a7.png)
2022·新疆·三模 查看更多[3]
更新时间:2022-07-13 18:04:48
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适中
(0.65)
【推荐1】已知函数
在点
处的切线斜率为4,且在
处取得极值.
(1)求函数
的单调区间;
(2)若函数
恰有两个零点,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae06c488100e31570805778b1d322e4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce912cf5cf2768ce474d0af7cc81fe9f.png)
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解题方法
【推荐2】已知函数
在点
处的切线与直线
平行,且
,其中
.
(Ⅰ)求
的值,并求出函数
的单调区间;
(Ⅱ)设函数
,对于正实数
,若
,使得
成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454da056da7c107c488a7142ffa46c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93293eb93cbd9e60cdd66c399d6e4577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a70c79498eaafdd27bbd17f57ae46b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7569cd7e9b31ad838230133b9bc8314.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3447d2d73dbe361b7cc26591af8788d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860c449466dcf1f2f98175def034d537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25bc7ea255f804b90df4de4992ba4a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
【推荐1】已知函数
.
(Ⅰ)当
时,讨论函数
的单调性;
(Ⅱ)当
,
时,
,其中
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd19e91c01516ee039465bedcd41dadc.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07630bbde4cfcfabfb863995944d38fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4351690859edb6d411f526dfab12cd6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecaacf913bac4b0b2b6625994fca3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0648c84fe83a027030a3fe7848f0518a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5b9d0331d4d01d8cd84bcc275324d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d188e9521b6a58cd0cbb2e1e0e37e299.png)
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适中
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解题方法
【推荐2】已知函数f (x)=
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