If A is a square matrix of order 3 such that `|A|=2`
, then write the value of `a d j(a d jA)dot`
Text Solution
Verified by Experts
We know that `adj(adjA)=|A|^(n−2)⋅A`
, where n is order of the matrix.
It is given that A is a square matrix of order 3. `adj(adjA)=|A|^(3−2)⋅A=(2)^1⋅A=2A.`
adj(adjA)=2A.
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