Question

obtain the inverse of matrix A [2-13
-531
-323]​

Answer 1

Answer:

lusing the formula, we first determine the cofactors Cij of A. C11=|−1201|=−1,C12=−|0201|=0,C13=|0−100|=0C21=−|5201|=−5,C22=|1201|=1,C23=−|1500|=0C31=|52−12|=12,C32=−|1202|=−2,C33=|150−1|=−1.