1 . 已知二次函数
(
).
(1)若
为偶函数,求
的值;
(2)若
的解集为
,求a,b的值;
(3)若
在区间
上单调递增,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb4365abb5eb114c27ea012265fd94a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392372224ab753754c37d3bba67d9d6b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc217fe5e4a3ec8ebc47f062f0b7ccf.png)
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2019-11-12更新
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2卷引用:吉林省辽源市田家炳高级中学2019-2020学年高一上学期12月月考数学试题