Please solve the question in the attachment ........ .. .................. .
Please solve the question in the attachment
........ .. .................. .
Pawan joshi , 7 Years ago
Grade 12th pass
Algebra> Please solve the question in the attachme...
3 Answers
Khimraj
since adj(adj(X)) = X
so C = A
and B = D = adj(A)
and
adj(adj(adj(adj(ABCD)))) = ABCD = ABAB = A*adj(A)*A*adj(A)
since A*adj(A) = |A|
so adj(adj(adj(adj(ABCD)))) = |A|*|A| = |A|2
so k=2
Hope it clears.......................
Approved Last Activity: 7 Years ago
Pawan joshi
sir answer is not 2.
Khimraj
sorry
since A*adj(A) = |A| *I
|adj(adj(adj(adj(ABCD))))| = |(|A|*I)(|A|*I)| = ||A|*I|*||A|*I| = 0*0 = 0
so |adj(adj(adj(adj(ABCD))))| = 
So k = 
Hope now it is correct
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