一道复数解答题设Z是虚数,W=Z+1/Z且-1≤W≤1 ,求|Z|的值及Z的实部的取值范围.(2)若B=1-Z/1+Z,求证B为纯虚数
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![一道复数解答题设Z是虚数,W=Z+1/Z且-1≤W≤1 ,求|Z|的值及Z的实部的取值范围.(2)若B=1-Z/1+Z,求证B为纯虚数](/uploads/image/z/11945434-58-4.jpg?t=%E4%B8%80%E9%81%93%E5%A4%8D%E6%95%B0%E8%A7%A3%E7%AD%94%E9%A2%98%E8%AE%BEZ%E6%98%AF%E8%99%9A%E6%95%B0%2CW%3DZ%2B1%2FZ%E4%B8%94-1%E2%89%A4W%E2%89%A41+%2C%E6%B1%82%7CZ%7C%E7%9A%84%E5%80%BC%E5%8F%8AZ%E7%9A%84%E5%AE%9E%E9%83%A8%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.%282%29%E8%8B%A5B%3D1-Z%2F1%2BZ%2C%E6%B1%82%E8%AF%81B%E4%B8%BA%E7%BA%AF%E8%99%9A%E6%95%B0)
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