Jawabanmu

2014-09-12T19:29:03+07:00
2014-09-12T19:33:25+07:00
Rumus invers = 1/det matriks . Adj matriks
A = 1  4
       1 5
A^-1(A invers) = 1/5-4  * (5 -4) = ( 5 -4)
                                    (-1 1)    (-1 1)