Question

计算 1-2i/3+4i 求高人指点

Answer 1

解“：z=1-2i/3+4i
=(1-2i)(3-4i)/(3+4i)(3-4i)
=(3-4i-6i+8i)/(9-16i)
=(3-10i-8)/(9+16)
=(-5-10i)/25
=-1/5--2/5i
∴a=-1/5,b=-2/5.
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