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CBSE Class 12-science Answered

A square matrix of order 3 has |A|=6 , find |A.adjA|

Asked by mittalishita2002 | 23 Jan, 2020, 08:11: PM
Expert Answer
A square matrix of order 3 has |A|=6 .
 
|adjA| =|A|n-1 = |A|3-1 =|A| = 62 = 36
 
 
|A.adjA| = |A||adjA| = 6 × 36 = 216
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