Question

A is a non singular matrix of order 3 and IAI = 5.
find I adj A I ?

Answer 1

hey @angela210793 help

Answer 2

There is one formula for this you will have to use that..

Answer 3

My equation editor is not working...

I am refreshing the page just a sec..

Answer 4

\[\large \color{green}{{\left| Adj A \right| = \left| A \right|^{n-1}}, \quad n= Order \; Of \; Matrix}\]

here n= 3,

\[\large \color{blue}{\left| AdjA \right| = 5^2 = 25}\]