Solve unknow array/matrix

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Teemu Hämäläinen
评论： John D'Errico 2021-11-6
I have a know 2x2 array (3 0; 0 2)that get multiplied by array A and the answer is a known array C(1 2 3; 4 5 6), how can I solve all the elements in array A?

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回答（1 个）

the cyclist
the cyclist 2021-11-6
Ran in:
% Input
B = [3 0; 0 2];
C = [1 2 3; 4 5 6];
% Solve for A
A = B\C
A = 2×3
0.3333 0.6667 1.0000 2.0000 2.5000 3.0000
% Verify
B * A
ans = 2×3
1 2 3 4 5 6
  1 个评论
John D'Errico
John D'Errico 2021-11-6
Yes, of course. With only the caveat that an exact solution need not always exist. If B does not have full rank, then SOME of the time, there will be no solution.

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