13. [8 −3]
[-4 6]
how do i find the inverse with steps pls :)

Question

13. [8   −3]
      [-4    6]
how do i find the inverse with steps pls :)

anonymous · Answer

to inverse 2x2:

1. matrix in form [a b]
                            [c d]
2. to inverse you have to do the following


$$(1/ad-bc)*\left[\begin{matrix}d & -b \ -c & a\end{matrix}\right]$$

that will be the inverse

anonymous · Answer

ok thank u for that but waht is the answer becuase i have been trying that i just dont understand how to pug in

anonymous · Answer

haha
$$\left[\begin{matrix}.16667 & .0833333 \ .111111& .22222222\end{matrix}\right]$$

anonymous · Answer

$$\left[\begin{matrix}1/6 & 1/12 \ 1/9 & 2/9\end{matrix}\right]$$