Question

Solve this equation for A:
A + [ 11 17 -8 13] = [0 1 -2 3]

Answer 1

[-11 -16 6 -1]

Explanation:

A must be a 1 by 4 matrix, since the two matrices given are 1 x 4.

The first element of A must be -11, since then -11 + 11 = 0.

The second element of A must be -16, since then 17 - 16 = 1.

The third element of A must be +6, since then -8 + 6 = -2.

Finally, the fourth element of A must be -10, since then -10 + 13 = 3.

Thus, 1 by 4 matrix A is [-11 -16 6 -1].

Answer 2

a11: -11

a12: -16

a13: 6

a14: -10

Explanation:

The next one is:

Sample Response – The two matrices are different sizes. It is not possible to add matrices with different sizes.