> 数学 >
设z=|1-2✔2i|-(2+3i),则|z|?
人气:381 ℃ 时间:2020-06-16 02:07:40
解答
|1-2√2i| = √[1^2+(2√2)^2] = √(1+8) = √9 = 3
z = 3 - 2 -3i = 1 - 3i
|z| = √(1^2+3^2) = √10
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版