共50条信息
已知\(a\in R\),若\(\dfrac{a+2i}{4-i}\)是纯虚数,则在复平面内,复数\(z=ai+{{i}^{2018}}\)所对应的点位于\((\) \()\)
设\(i\)为虚数单位,则\((\dfrac{1{+}i}{i})^{2014}\)等于\(({ })\)
已知\(i\)是虚数单位,复数\(z=(1+i)·i^{3}\),则 \(\dfrac{1}{z}\) 的共轭复数是( )
设 \(f\left(n\right)={i}^{n}+{i}^{-n}\left(n∈N\right) \) ,则集合\(\left\{x \left|x=f\left(n\right) \right.\right\} \)中元素的个数为
已知复数\(f(n)={{i}^{n}}(n\in N*)\),则集合\(\left\{ z|z=f(n) \right\}\)中元素的个数是\((\) \()\)
已知\(i\)是虚数单位,则\(1+\)\(i\)\(+\)\(i\)\({\,\!}^{2}…+\)\(i\)\({\,\!}^{2018}\)等于( )
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