00:01
In this question, we are asked to write the given matrix equation as a system of linear equations.
00:06
And to do that, on the left -hand side, we need to perform to multiply the matrix by the vector x, y, z.
00:13
And to do that, we will start by multiplying the first row of the matrix by the vector.
00:19
And that means we need to multiply them coordinate twice, and then add them up.
00:26
We will get 2x minus 1 times y plus, 7 times z.
00:35
In the second, to get the next entry, we need to multiply the second row of the matrix by the vector.
00:42
We will get negative 4x plus 3 quarters y plus 1 3rd z.
00:52
And to get the last entry, we need to multiply the last row by the vector...