已知函数
,
.
(1)求函数
的零点;
(2)若直线
:
(
,
,
为常数)与
的图像交于不同的两点
、
,与
的图像交于不同的两点
、
,求证:
;
(3)求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69b76612264b62b3e66947e71707ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f24aab8780eba1befac8d7c33efb941.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b785a2cd2e5dbee80d59c87183f20181.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f6e1f67dc15c3cf135a78af95c70fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1af14f9a53cb0f07d5d28dceba30aa.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09d9df587e95d42bac3f4106d95642b.png)
更新时间:2020-02-12 18:43:25
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【推荐1】已知函数
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【推荐2】定义在
上的函数
满足:对于任意实数
都有
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(Ⅰ)判定函数
的单调性,并加以证明;
(Ⅱ)设
,若函数
有三个零点从小到大分别为
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(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7eb19bbb82b30dbad3823f37ce8422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ee0e1832a860d241122caa8465109a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea44a32df5fa3102d4a298c4dc5d342.png)
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【推荐3】已知函数
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【推荐1】.已知函数
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(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002ad1638f25e355d70d5ab63e637f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d1aa3b4d2b468607d251127ac3968d.png)
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【推荐2】定义
,
,
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.
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【推荐1】已知
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【推荐2】已知函数
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【推荐3】已知函数
.
(1)证明函数
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【推荐1】设
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;
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【推荐2】已知
.
(1)当
时,求
的展开式中含
项的系数;
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的展开式中含
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.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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(2)证明:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e26f2235031a8d214d82a5e405db676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f491e0ec6cfcb294892cfb37270e5d92.png)
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【推荐3】已知二项式
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2521506a29dfa82b76370f6621b5e43.png)
(2)若它的二项式系数之和为128,求展开式中系数最大的项.
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