matlab求解矩阵方程组：A+B=C；A-B=D；其中，C、D已知，都是21*21的矩阵，请各位大侠求解！

Question

如题所述

Answer 1

两式相加可得，A=(C+D)/2
想减为：B=(C-D)/2

Answer 2

程序如下：
clear
clc;
[x,y] = solve('x+y=C','x-y=D');
C = randint(21,21,100);
D = randint(21,21,100);
A = subs(x,{'C','D'},{C,D});
B = subs(y,{'C','D'},{C,D});
结果自己运行。
如果要简单的话就用：
>>A=(C+D)/2
>>B=(C-D)/2本回答被网友采纳