一个边长为2的正方形,以左下角为圆心,1为半径,挖去了1/4个圆
所以面积为4-pi/4
复数z=a+bi(a,b属于R),若|z|>=1,
复数z=a+bi(a,b属于R),若|z|>=1,
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数学人气:187 ℃时间:2020-02-06 13:26:52
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