Question

dada A=(1...0) det A-1
...............(2...4)

Answer 1

$deta = \left[\begin{array}{ccc}1&0&\\2&4&\\\end{array}\right] --\ \textgreater \ det a=1.4-2.0 --\ \textgreater \ deta=4 portanto$

deta-1=4-1=3