早教吧作业答案频道 -->英语-->
..HELPME...HELLO.IAMASTUDENTOFINTERNATIONALSCHOOL.ICAN'TUNDERSTAND.PLEASEHELPME...THX..1.已知|1-4ki|=5,求实数k的值.2.已知复数z=|2-3i|+3i,求|z|
题目详情
..HELP ME ...
HELLO.I AM A STUDENT OF INTERNATIONAL SCHOOL.I CAN'T UNDERSTAND.PLEASE HELP ME...THX..
1.已知 |1-4ki|=5,求实数k的值.
2.已知复数 z=|2-3i| + 3i ,求|z|
HELLO.I AM A STUDENT OF INTERNATIONAL SCHOOL.I CAN'T UNDERSTAND.PLEASE HELP ME...THX..
1.已知 |1-4ki|=5,求实数k的值.
2.已知复数 z=|2-3i| + 3i ,求|z|
▼优质解答
答案和解析
Now,let me help you,My english is too bad,Can you help me?
haha(中文~!)
first
|1-4ki|=5
1^2+16k^2=25
16k^2=24
k^2=24/16
k=(+ or -)2根号6/4
second
z=|2-3i| + 3i
=根号13+3i
so |z|=根号(13+9)=根号22
haha(中文~!)
first
|1-4ki|=5
1^2+16k^2=25
16k^2=24
k^2=24/16
k=(+ or -)2根号6/4
second
z=|2-3i| + 3i
=根号13+3i
so |z|=根号(13+9)=根号22
看了..HELPME...HELL...的网友还看了以下:
若3i-1是关于x的方程2x∧2+px+q=0的一个根,则p+q=若3i-1是关于x的方程2x∧2 2020-06-07 …
i/{(i-1)(i-2)}的解答步骤我看答案看了半天没看明白,不是要答案,我这有答案,特别是i/ 2020-07-04 …
高次复数方程1.为什么方程i^3=1的解是1,(√3i-1)/2和(-√3i-1)/2.2.解复数 2020-08-02 …
关于Gerund的练习1.Ican'thelpfeeling(feel)anxiousaboutmy 2020-10-29 …
高二数学选修1---2计算1)(6-5i)+(3+2i);2)(2/3+i)+(1-2/3i)-(1 2020-10-30 …
关于复数的题,以下哪个答案是对的?已知z1=1-3i,z2=6-8i,若1/z+1/z1=1/z2, 2020-10-31 …
复数求值,1.(2-3i)(4+i)2.(2+√3i)∧2.3.(3-5i)∧2.4.(1+3i)( 2020-11-01 …
A^2+5A-4I=0,证明A-3I可逆并求(A-3I)^-1 2020-11-01 …
数学题求步骤谢谢谢速度(3+4i)+(2-5i)(4-3i)-(3+2i)(2+i)/(5-3i)( 2020-11-01 …
设i为虚数单位,则下列四个式子正确的是()A.3i>2iB.|2-i|>2i2C.|2+3i|>|1 2020-11-01 …