你的分享就是我们的动力 ---﹥

已知z为纯虚数,且|z-1|=2,则z=

2018-07-19

题目:

已知z为纯虚数,且|z-1|=2,则z=

解答:

因为:z为纯虚数,所以:设z=bi
因为:|z-1|=2,所以:|-1+bi|=2
即:1+b^2=4,解得:b=根号3或-根号3
所以:z=(根号3)i或(-根号3)i


猜你喜欢:

1.有盐和水生成的反应是中和反应

2.i hear you have a watch,let me have a look at___.

3.副词前能加be动词吗 This man was desperately scream for help.

4.______students can guess the meaning of a word without looki