Question

矩阵(2 5,1 3）乘以X等于矩阵（7 19,4 11）求X

Answer 1

(2 5

1 3)X

=(7 19

4 11)

令

A=(2 5

1 3)

A^(-1)

=(3 -5

-1 2)

所以

X=A^(-1)*

(7 19

4 11)

=(3 -5

-1 2)

*(7 19

4 11)

=（1 2

1 3)