29. If A and B are 2 x 2 matrices, and det(A) = det(B) = 0 then det(A + B) = 0. 30. If A is a 2 x 2 matrix and det(A) #0

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29 If A And B Are 2 X 2 Matrices And Det A Det B 0 Then Det A B 0 30 If A Is A 2 X 2 Matrix And Det A 0 1 (18.73 KiB) Viewed 31 times

29. If A and B are 2 x 2 matrices, and det(A) = det(B) = 0 then det(A + B) = 0. 30. If A is a 2 x 2 matrix and det(A) #0 then A is invertible. 31. If all the entries of an n x n matrix are positive then det (A) > 0. 32. If the first row of an n x n matrix contains all zeros then det(A) = 0.