问题
选择题
复数z满足(1+2i)
|
答案
由(1+2i)
=4+3i，得. z
=. z
=4+3i 1+2i
=(4+3i)(1-2i) (1+2i)(1-2i)
=2-i．10-5i 5
所以z=
=2+i．. . z
故选B．
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复数z满足(1+2i)
|
由(1+2i)
=4+3i，得. z
=. z
=4+3i 1+2i
=(4+3i)(1-2i) (1+2i)(1-2i)
=2-i．10-5i 5
所以z=
=2+i．. . z
故选B．