共50条信息
在复平面内,复数\(z=\dfrac{1}{2+i}+{{i}^{2018}}\)对应的点位于\((\) \()\)
设\(f(n)={\left( \dfrac{1+i}{1-i}\right)}^{n}+{\left( \dfrac{1-i}{1+i}\right)}^{n}\left(n∈N\right) \),则集合\(\left\{x \left|x=f(n) \right.\right\} \)的子集个数是 .
若集合 \(A=\left\{ i,{{i}^{2}},{{i}^{3}},{{i}^{4}} \right\}\) \((i\) 是虚数单位\()\),\(B=\left\{ 1,-1 \right\}\),则\(A\bigcap B\) 等于____.
进入组卷