Question

If A=[6 5 2 1] then adj A= ?
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Answer 1

Answer:

Solution

Given, A=[  5 7 2 3 ]

Therefore,

∣A∣=  ∣ ∣ 5 7 23

​   =15−14=1

We know that, |adj (A)| = ∣A∣  

n−1 , where n is order of determinant.

Therefore,

∣adj(A)∣=∣1∣  

2−1

 ∣adj(A)∣=1

Step-by-step explanation: