已知集合A={0,1,2,3,4,5,6,7,8,9},
1个回答
1)10×10=100
2)10×1=10
3)1×9=9
答:复数z=a+bi共有100个,复数z=a+bi中有10个实数,复数z=a+bi中有9个纯虚数
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