问题
选择题
复数z1=
|
答案
因为z1=
,z2=2-3i,3+2i 4-3i
所以|z3|= |
|=|z1 z2
|=3+2i (4-3i)(2-3i)
=|3+2i| |4-3i||2-3i|
.1 5
故选A.
复数z1=
|
因为z1=
,z2=2-3i,3+2i 4-3i
所以|z3|= |
|=|z1 z2
|=3+2i (4-3i)(2-3i)
=|3+2i| |4-3i||2-3i|
.1 5
故选A.