Math problem please please help me!!!!!!!?
i need to solve the linear system of equations by computing X= A^-1 B
this has to be a matrix thats 2 by 2 and then the solution as well
please help please
- 8 years ago
I did matrix last year so it might be a bit rusty but I'll try my best!
so, the first matrix would be
[1 6] (first row )
[-6 2] (second row)
and the second matrix is
but pretend those are connected.. like, vertically.
and those 2 multiplied by each other equals
[ 8 ]
so you've got
[1 6]*[x]=[ 8 ]
[-6 2] [y] 
the first matrix is "A" so you raise that to the first power
and the third matrix is your "B"
so then you put them back into the equation X=A^-1 B
[1 6]^-1 *  = [x]
[-6 2] ..... .[y]
make sure you raise the whole matrix to the negative one power and not just [1 6]
Hope it helped? I'm a junior in high school so yeah...Source(s): high school math..
- Anonymous8 years ago
solve for y
substitute into one of the equations