名校
解题方法
1 . 给出下列命题:
①存在实数
,使
;
②函数
是偶函数;
③若
是第一象限角,且
,则
;
④
是函数
的一条对称轴方程.
以上命题是真命题的是_______ (填写序号)
①存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f14d62e7aedb5f323de737281cd901.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0782208455d7652cce672ec088b1a447.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c61cfbfd3bf888856b7dc9b2a84c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116a4f1c8b51d1993e6d7c054e2ed5d7.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e60b49815c5c25b48e6c74d7077851a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7b4e0f8f88a09d1a14465c8c8b07172.png)
以上命题是真命题的是
您最近一年使用:0次
2022-04-24更新
|
442次组卷
|
2卷引用:天津市红桥区2018-2019学年高一上学期期末数学试题
2 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/d4542d59-b1c4-433f-873c-50f31cda9a09.png?resizew=382)
(1)若
,用“五点法”在给定的坐标系中,画出函数
在
上的图象;
(2)若
为奇函数,求
;
(3)在(2)的前提下,将函数
的图象向左平移
个单位后,再将得到的图象上各点的横坐标伸长为原来的2倍,纵坐标不变,得到函数
的图象,求
在
上的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdab7e6b9e2049d9d91ab7ea440b274.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/d4542d59-b1c4-433f-873c-50f31cda9a09.png?resizew=382)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6103aca24b1b84faf0ef536d17a27325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(3)在(2)的前提下,将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
您最近一年使用:0次