考试数学题,1.已知复数z=1-i,则z^2/z-1=(A)2 (B)-2 (C)2i (D)-2i2.已知全集U={-1,0,1,2},集合A={-2,2},B={0,2},则(CuA)交于B= (A){0} (B){2} (C){0,1,2} (D){空集}

分类: 作业答案 • 2022-03-05 17:44:18

问题描述：

考试数学题,
1.已知复数z=1-i,则z^2/z-1=
(A)2 (B)-2 (C)2i (D)-2i
2.已知全集U={-1,0,1,2},集合
A={-2,2},B={0,2},则(CuA)交于B=
(A){0} (B){2} (C){0,1,2} (D){空集}

答

A A