求问各位高手，已知
A=[0.15,0.171,0.106,0.146,0.12,0.153,0.155];
B=[0.179,0.169,0.073,0.148,0.104,0.171,0.155];
求：矩阵P=B/A，矩阵P是7乘7的。
约束条件：最小平方估计，即min（sum(sum((A*P-B)^2)))），矩阵P每行和为1，且每个元素大于等于0.
请问，结果要怎么求呢，不胜感激！