设a,b∈R,(2+b)/(a-i)=0.5-i,则a+bi=
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设a,b∈R,(2+b)/(a-i)=0.5-i,则a+bi=
设a,b∈R,(2+b)/(a-i)=0.5-i,则a+bi=
设a,b∈R,(2+b)/(a-i)=0.5-i,则a+bi=
2+b=(a-i)(0.5-i)=0.5a+0.5i-ai+1
b-0.5a+1+(a-0.5)i=0
∵a,b∈R
∴b-0.5a+1=a-0.5=0
∴a=0.5,b=-0.75
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