let A be a nonsingular squar matrix of order 3 x 3. Then ladjAl is equal to:
(a) |A|
(b)|A|^2
(c) |A|^3
(d) |A|
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let A be a nonsingular squar matrix of order 3 x 3. Then ladjAl is equal to:
(a) |A|
(b)|A|^2
(c) |A|^3
(d) |A|
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Answer:
|adjA|=|A|^n-1 ( when squre matrix is given).
we use this formula.
2 option is correct.
Here value of n is 3(order of a squre matrix).