摘要: 询问是要求$\sum_{i=1}^n((x[i]-a)^2+(y[i]-b)^2)(x[i]=a||y[i]=b)$即求$\sum_{i=1}^n(x[i]-a)^2(y[i]=b)+\sum_{i=1}^n(y[i]-b)^2(x[i]=a)$拆开得$\sum_{i=1}^n(x[i]^2-2ax... 阅读全文
posted @ 2014-04-18 13:03 Claris 阅读(1412) 评论(0) 推荐(0) 编辑