2 Let A and B be 3 × 3 matrices such that A 3 = B 6. The matrix C = A – 2B is invertibl [5] l10. A) True B False

Let A and B be 7 × 6 matrices. If dimN(A) = 4, what is the rank of A? rank(A) If rank (B) = 2, what is the nullity of B? nullity of B =

Let A be a 4 x 4 matrix which is row equivalent to the matrix invertible? Tooo 0 -3 oooo 0 obon HTTN -6 -6 0 0 0 1 Is A

3. Determine the last column so that the resulting matrix is an orthogonal matrix: 1/√6 ? 1/√/2 1/√2-1/√6 ? 0 2/√6 ?