解题方法
1 . 已知
,
(1)用分段函数表示
的解析式,作出其图象;并指出函数
的定义域与值域,单调区间;
(2)解不等式
;
(3)讨论直线
与
图象的交点个数,并写出实数a的取值范围(不需要证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceee492e1b65894c0285de16c054b35a.png)
(1)用分段函数表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/dcc8a987-7cc4-4ebb-9ec1-0ed380749a1b.png?resizew=239)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a8a9f4f0d6590de86becb733bd1b6b.png)
(3)讨论直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2023-10-25更新
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4卷引用:辽宁省朝阳市2023-2024学年高一上学期12月月考数学试题
辽宁省朝阳市2023-2024学年高一上学期12月月考数学试题云南省曲靖一中景洪学校2023-2024学年高一上学期10月月考数学试题(已下线)模块二 专题2《函数的应用》单元检测篇 A基础卷 (人教A)(已下线)8.1 二分法与求方程近似解(十二大题型)(2)-【帮课堂】(苏教版2019必修第一册)
2 . 已知函数
(
,
)和函数
(
,
,
).问:(1)证明:
在
上是增函数;
(2)把函数
和
写成分段函数的形式,并画出它们的图象,总结出
的图象是如何由
的图象得到的.请利用上面你的结论说明:
的图象关于
对称;
(3)当
,
,
时,若
对于任意的
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acce899605cc4c8f3edd448d3698dbff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43088d2896a03ae9fbea20d90c5c228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b44ee4980ba595d17513def3b7b283.png)
(2)把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf114a51ea8ad6cfc4ec77f80be48f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154f1ff645e37782e6078249d65cda00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f095d2a88a647aa69a6e9e84899a408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7172f1fed97ccac6aa8f6c5b992a79c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b334dafda377c3db77647c8cf1e95f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a783088120d67cc98936081e80fb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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