1 . 有以下结论∶
①若
,
,则
角的终边在第三象限;
②幂函数
在(0,+∞)上为减函数,则实数m的值为0;
③已知函数
,若方程
有三个不同的根
,则
的值为
或0;
④定义在R上的奇函数
满足:对于任意
有
若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad3f57fddf23e8d4916e040cb514a7a.png)
的值为 1.
其中正确结论的个数为( )
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb25ad9e7d8d28b60294ed41ef80e0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75d64552c04e1d0ef1aef96d2d08489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
②幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/807f0ecc6c2abbc62465e01c702faca0.png)
③已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b802fdd35c803132479a15cad6ca0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafaeedddee618f5e86a5f2efd15b2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
④定义在R上的奇函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b7ccb258d9d8854fed8d454b82d542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a16bfd5bf2fbfa4b20e1f8ac7f295c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad3f57fddf23e8d4916e040cb514a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a4f804c367383dd828df4592e92d392.png)
其中正确结论的个数为( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
A.1 | B.2 | C.3 | D.4 |