Question

Let A `= [(1,2),(-5,1)]` and A^-1 = xA + yI, then the values of x and y respectively are ____________.

Options

• `(-1)/11, 2/11`

• `(-1)/11, (-2)/11`

• `1/11, 2/11`

• `1/11, (-2)/11`

Answer 1

Let A `= [(1,2),(-5,1)]` and A^-1 = xA + yI, then the values of x and y respectively are `underline((-1)/11, 2/11)`.