(x + iy) (1 + i)i = 2 - 2i
a) x=1 e y=2
b) x= -2 e y = 0
c)x=0 e y=2
d) Other
Which one of the four answers is right?
What is the correct value of x and y?
2016-12-05 1:57 pm
回答 (1)
2016-12-05 2:28 pm
✔ 最佳答案
(x + iy)(1 + i)i = 2 - 2i(x + xi + yi - y)i = 2 - 2i
xi - x - y - yi = 2 - 2i
xi - yi = -2i
-x - y = 2
solve the system of equations:
x - y = -2
-x - y = 2
------------
-2y = 0
y = 0
x = -2
收錄日期: 2021-04-23 23:53:22
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https://hk.answers.yahoo.com/question/index?qid=20161205055749AAdgWSm