解题方法
1 . 已知函数
.
(1)如图,在
中,角
的对边分别为
,点
为
的中点.当
时,
分别等于
的最小值、最大值,且
,求
的长.
时,关于
的方程
有三个不同的解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580fec97f209b419348b6c85026e708.png)
(1)如图,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545ab10e0fbef16958436eafc041cd17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315116290dce11165908b4f3292d94c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924bb9ef16dff26bb68fee2d279a0d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e1f1a07c3df944364bebf762777991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-07-14更新
|
244次组卷
|
3卷引用:湖南省郴州市2022-2023学年高二下学期期末数学试题
2 . 已知函数
的图象是由函数
的图象经如下变换得到:先将
图象上所有点的纵坐标伸长到原来的2倍(横坐标不变),再将所得到的图象向左平移
个单位长度.
(1)求函数
在
上的单调递增区间;
(2)已知关于
的方程
在
内有两个不同的解
,
.求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588bbf780d49cf4d29802c2e4126f112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd8d62ad777d3500e9b528c50273b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1613d377a07850c72cbec354b7a3000f.png)
(2)已知关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf871091766380bfef006f691c894006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42992de508e4eb3031bf8ff44dcff45b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8fd09f8db6b389e31f7bc90656be5ab.png)
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3 . 已知
,直线
是函数
图象的一条对称轴.
(1)求
的值,并求
的解析式;
(2)若关于
的方程
在区间
上有且只有一个实数解,求实数
的取值范围;
(3)已知函数
的图象是由
图象上的所有点的横坐标伸长到原来的2倍,然后再向左平移
个单位得到,若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb259ddb16d583a5ef11fe041fafc0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b371806a65be18227a0453dda3e2a16d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dade93e54e462e223ef5c85c70f51842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68a86a7718b40bf14a3d27c914d02ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ca334d2ae1289b70941e6af9e336a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a164a5f2edc4cc1558c70c135209d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de418d64e1c7dbe4edb1053a102f798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
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