For the matrix below, provide a P and a diagonal matrix D such that A=PDP^−1
So I know that I'm supposed to subtract the eigen values λ=1−2i,1+2i diagonally from the matrix below and then use RREF until each matrix is simplified. I'm confused as to what I would do because there are only 2 eigen values but there are 4 columns. Would the other two columns just be filled with 0?
I pressed enter with my answers below but it says my answer is wrong. I'm stumped as to what I'm doing wrong, can someone explain?
So I know that I'm supposed to subtract the eigen values λ=1−2i,1+2i diagonally from the matrix below and then use RREF until each matrix is simplified. I'm confused as to what I would do because there are only 2 eigen values but there are 4 columns. Would the other two columns just be filled with 0?
I pressed enter with my answers below but it says my answer is wrong. I'm stumped as to what I'm doing wrong, can someone explain?