已知直线ax+by﹣1=0(a>0,b>0)平分圆x2+y2﹣2x﹣2y+1=0的周长,则
的最小值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
更新时间:2021-10-28 14:37:19
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