已知双曲线
:
的左、右焦点分别为
,
在
的右支上,若
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0454a4e1f14d5e42c197d8c6d3313377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c974f806fe71269c7d22d2365aff20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83dddbbb31edc15a416a16894e83d7a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f4dae5397232f44d0051fae1b0bd39.png)
2020·全国·模拟预测 查看更多[1]
(已下线)数学-学科网3月第三次在线大联考(山东卷)
更新时间:2020-03-23 10:53:04
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【推荐1】函数
,
的值域是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/785b9b0fecd8b968e797161de5296ee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5abfe6def9cdcb9ea11945e335be32.png)
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【推荐2】函数f(x)=
cos
的图象向右平移
个单位长度,得到函数
的图象,则函数
的解析式为_______ ,函数
的值域是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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【推荐1】在
中(a,b,c分别为角
的对边),若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4756dc11da0910b70e3ca3e4cb11aab.png)
_________________
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【推荐2】已知平面向量
,
(
,
)满足
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【推荐1】如果方程
y|y|=1所对应的曲线与函数y=f(x)的图象完全重合,那么对于函数y=f(x)有如下结论:
①函数f(x)在R上单调递减;
②y=f(x)的图象上的点到坐标原点距离的最小值为1;
③函数f(x)的值域为(﹣∞,2];
④函数F(x)=f(x)+x有且只有一个零点.
其中正确结论的序号是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e93fe60f5a02656cb01200ea323408f.png)
①函数f(x)在R上单调递减;
②y=f(x)的图象上的点到坐标原点距离的最小值为1;
③函数f(x)的值域为(﹣∞,2];
④函数F(x)=f(x)+x有且只有一个零点.
其中正确结论的序号是
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【推荐2】已知
,
是双曲线
的左右焦点,过
且倾斜角为60°的直线
与
的左、右两支分别交于
、
两点.若
,则双曲线
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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