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A & B are two square matrix of order 3 each I A I = 2 & I B I = 3 .find I 3AB I .?????? bansal classes kota bansal classes kota

  1. A & B are two square matrix of order 3 each  I A I = 2 & I B I  = 3  .find I 3AB I  .??????
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bansal classes kota

Grade:6

1 Answers

Arun
25750 Points
6 years ago
Dear Neelesh
 
As A and B srae 3X 3 mafrix hence
AB will be a 3X 3 matrix also.
 
Hence
|3 AB| = 3³ |AB| = 3³ |A| |B|
 = 27 *2 *3
= 162
 
Regards
Arun (askIITians forum expert)

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