共50条信息
\(i\)是虚数单位,若复数\((\)\(a\)\(+\)\(b\)\(i)(1+i)=7-3i\),则\(\dfrac{a}{b}\)的值为________.
\(z+2 \overset{¯}{z}=9+4i (i\)为虚数单位\()\),则\(\left|z\right|= \)
已知\(a\),\(b∈R\),\(i\)是虚数单位,若\((2+i)(1-bi)=a+i\),则\(a+b=\)__________.
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