解题方法
1 . 已知函数
(1)画出
的图象,直接写出方程
的解集;
(2)若方程
至少有两个不等的根,直接写出t的取值范围;
(3)若
,且
,求
的最大值,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f07ea8f8aca9b5a42cfd3d526f190de.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e4ba6d5f2eea68442def1911957fe.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713c59f274e9146b6d85375435315521.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/6a7507e7-732c-4d28-add4-008d9ba33114.png?resizew=196)
(1)画出此函数的图像;
(2)求不等式
的解集;
(3)若函数
有三个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26701674c0359caec439b3a9c13ea11c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/6a7507e7-732c-4d28-add4-008d9ba33114.png?resizew=196)
(1)画出此函数的图像;
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec7a126e69669d0374f88122823818d.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5711df0ebcf755bbaa57842a5285404f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次