If A is of 3rd order square matrix such that |A|=2 then |adj(adj(adjA))| is=?Pls ans with proper steps
manan tiwari , 6 Years ago
Grade 12
Algebra> If A is of 3 rd order square matrix such ...
1 Answers
Arun
Last Activity: 6 Years ago
Dear Manan
As we know
|adj A| = |A|n –1
Now
|adj(adj(adjA))| = |(adj(adjA))|n –1 = |(adjA))|(n –1)^2 = |A|(n –1)^3
= 22^3
= 28
= 256
Regards
Arun (askIITians forum expert)
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