DeterminantHard
Question
Which of the following is true for matrix A = 
Options
A.A + 4I is a symmetric matrix
B.A2 - 4A + 5I2 = 0
C.A - B is a diagonal matrix for any value of α if B = 
D.A - 4I is a skew symmetric matrix
Solution
A = 
A2 - 4A + 5I2 ⇒
=
= 0
C = A - B =
is diagonal matrix, ∀ α ∈ R
A2 - 4A + 5I2 ⇒
=
= 0 C = A - B =
is diagonal matrix, ∀ α ∈ RCreate a free account to view solution
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