Question

A=0 19
0 1
what is A^-1

Answer 1

hi

Answer 2

hi. @aa123

Answer 3

Hmmm

Answer 4

umm what grade math is this

Answer 5

sorry i don't think i know this stuff

Answer 6

11th, algebra 2

Answer 7

\[\mathbf {AI}= \left[\begin{matrix}0&19\\0&1\end{matrix}\right|\left.\begin{matrix}1&0\\0&1\end{matrix}\right]\]

row reduce this to

\[\mathbf {IA}^{-1}= \left[\begin{matrix}1&0\\0&1\end{matrix}\right|\left.\begin{matrix}?&?\\?&?\end{matrix}\right]\]

Answer 8

@UnkleRhaukus hi

Answer 9

hi !

Answer 10

@UnkleRhaukus can you help me with somthing

Answer 11

heres the question?
http://openstudy.com/study#/updates/53626c58e4b0a83d8e0efe7a

Answer 12

Maybe before you try and find the inverses of A, you should check if A is invertible,
can you find the determinant of A?

Answer 13

If the determinant of a matrix is 0, then this matrix is singular; it has no inverse