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if a& b are square matrix of order 3 such that |A| =-1 and |B|=3 find value of |3AB|

if a& b are square matrix of order 3 such that |A| =-1 and |B|=3 find value of |3AB|

Grade:12

1 Answers

Arun
25763 Points
3 years ago
Dear Abhi,
 
In an n squared matrix
 
|3AB| = 3^n |A|*|B|
= 3³ * (-1) * (3)
= -81
 
Regards
Arun (askIITians forum expert)

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