If then A2 is equal to

Let A = ∴ A2 = By matrix multiplication:⇒ A2 = which matches with option (D)∴ Option (D) is the correct answer.

Q58 of 146 Page 52

If then A² is equal to

Let A =

∴ A² =

By matrix multiplication:

⇒ A² = which matches with option (D)

∴ Option (D) is the correct answer.

If then A – B is equal to

If A and B are two matrices of the order 3 × m and 3 × n, respectively, and m = n, then the order of matrix (5A – 2B) is

If matrix , where a_ij = 1 if i ≠ j

a_ij = 0 if i = j, then A² is equal to

The matrix is a