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}
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![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}](/uploads/image/z/1721111-23-1.jpg?t=%E8%80%83%E8%AF%95%E6%95%B0%E5%AD%A6%E9%A2%98%2C1.%E5%B7%B2%E7%9F%A5%E5%A4%8D%E6%95%B0z%3D1-i%2C%E5%88%99z%5E2%2Fz-1%3D%28A%292+%28B%29-2+%28C%292i+%28D%29-2i2.%E5%B7%B2%E7%9F%A5%E5%85%A8%E9%9B%86U%3D%7B-1%2C0%2C1%2C2%7D%2C%E9%9B%86%E5%90%88A%3D%7B-2%2C2%7D%2CB%3D%7B0%2C2%7D%2C%E5%88%99%28CuA%29%E4%BA%A4%E4%BA%8EB%3D+%28A%29%7B0%7D+%28B%29%7B2%7D+%28C%29%7B0%2C1%2C2%7D+%28D%29%7B%E7%A9%BA%E9%9B%86%7D)
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}
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}
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}
A A
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