名校
1 . 已知实数
满足
则目标函数
的最小值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fa2b90a692f6e2c29d23a47e1e6c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee51b0cac927e6445e4b94438c2ff3da.png)
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2016-12-04更新
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419次组卷
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7卷引用:2016届江苏省南京市、盐城市高三第一次模拟考试数学试卷
2 . 已知f(x)是二次函数,不等式f(x)<0的解集是(0,5) ,且f(x)在区间[-1,4]上的最大值是12.
(1)求f(x)的解析式.
(2)求f(x)在区间[-1,4]的值域.
(1)求f(x)的解析式.
(2)求f(x)在区间[-1,4]的值域.
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3 . 实数
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691160abf567774ca014972792000f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c81c5dcd993c45744a6bb437b45102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966704c87958d8ec5f52fedb40aa06d.png)
,如果它们的平方组成公差
的等差数列,当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11778bb09474c72805ed7d961d72aa2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c957e474b8019a186ffc6d4fe211ce5c.png)
取最小值时,
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ed7324f302cbc12b5057b7e876d15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691160abf567774ca014972792000f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c81c5dcd993c45744a6bb437b45102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966704c87958d8ec5f52fedb40aa06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a39c916c910c2313b53c09a8c44b3f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c25e2ba18f8db5704637cbd0448c22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11778bb09474c72805ed7d961d72aa2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c957e474b8019a186ffc6d4fe211ce5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f730af6e2866c54486139c1e82467b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/555b8725ba911efb55e10f1e671202b6.png)
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12-13高二上·云南大理·阶段练习
真题
4 . 在△ABC中,AB=1, BC=2, B=60°,则AC=_____ .
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2016-12-02更新
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6卷引用:2015-2016学年江苏省宿迁市沐阳县高一下学期期中数学试卷
12-13高三上·江苏盐城·期中
5 . 若等差数列
的前
项和
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fcd86b9ed6819116a261629f96fae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0abedd59476f8793d5a8948590a70c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
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