Question

If B is a matrix of order 3 x 3 , then find the value of |BB^-1|​

Answer 1

Answer: it’s a pleasure to help you friend

Step-by-step explanation:

Given b = 3 × 3

Generally, 3 × 3 = 9

So, ║BB ^-1 ║ = ║(3×3) × (3×3) ^-1║

= ║ 9 × 9^ -1║

= ║81^-1║

Generally ║- a║ = a

So, ║81^-1║ = -81^1 = -81

Therefore, ║BB^-1║ = - 81

Hope it’s useful friend..

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