1 . 下列判断错误的是______ (填写序号)
①集合{y|y=
}有4个子集;
②若α≠β,则tanα≠tanβ;
③若log2a>log2b,则2a>2b;
④设函数f(x)=log2x的反函数为g(x),则g(2)=1;
⑤已知定义在R上的奇函数f(x)在(-∞,0)内有1008个零点,则函数f(x)的零点个数为2017.
①集合{y|y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addc0ed844dcdbd3f9f5f73d45a71fda.png)
②若α≠β,则tanα≠tanβ;
③若log2a>log2b,则2a>2b;
④设函数f(x)=log2x的反函数为g(x),则g(2)=1;
⑤已知定义在R上的奇函数f(x)在(-∞,0)内有1008个零点,则函数f(x)的零点个数为2017.
您最近一年使用:0次
2 . 判断正误(正确的写正确,错误的写错误)
(1)任何集合至少有两个子集.( )
(2)
.( )
(3)若
,且
,则
.( )
(4)集合
的子集是
,
,
.( )
(1)任何集合至少有两个子集.
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91b4a4530b820b6728f37e497847faf.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb584b83ae783a0ec8a9b4628b7fca3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(4)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dcd9264c20f3413a875633884622db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f5e5688b5c7e514ee72597690a7676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6170ed4a10e57487d525e71610dff82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dcd9264c20f3413a875633884622db.png)
您最近一年使用:0次
2019高一·浙江·专题练习
3 . 有以下判断:
①
与
表示同一函数;
②函数
的图象与直线
的交点最多有1个;
③若集合
有且仅有2个子集,则满足条件的实数
有3个;
④若
,则
.
其中正确判断的序号是______ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68af49a6c0839e9b8a1e35b44fbc437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f8eb67ca02f683ff961ef418efbac8.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
③若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb23a07a70b24774e3258b574df46b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1e9ce6b266b255f9997a4b949a6da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f839732437207deb2b66be04bf650832.png)
其中正确判断的序号是
您最近一年使用:0次