• 2022-06-29
    证明: 设[tex=2.0x1.214]vnzjVhyzo/NIhVUgFyjLlA==[/tex]分别为[tex=1.929x1.0]+MkgvJhrh9DSU9I+bn6v4w==[/tex]阶正定矩阵,则分块矩阵[tex=7.0x2.786]3FAQJGao+NWjhr2M60sqCmdeDA7TuDWrnpStZW5CZick8l4H5WXvjBIvz00DN32NcvLxIbvUc6ZsSjQIzSJc+g1NEnTFjvOFllrPJ28ct2jkhRIRcI89DywuL8qHekFisiEaui9473ovIuiQ/zMMEiWnZcKmZd9hE/kCQmimlp4=[/tex]也是正定矩阵.