Question 291144
how do you find the inverse of a matrix
<pre><font size = 4 color = "indigo"><b>
If it's a 2x2 matrix, like this: 

{{{A=(matrix(3,4,p,"","",q,"","","","",r,"","",s))}}}

use this formula:

{{{A^(-1)=(matrix(2,2,s/(ps-qr),-q/(ps-qr),-r/(ps-qr),p/(ps-qr)))}}}

If the matrix is larger this won't do.  When you get to those,

post again asking how to find inverses for those.

Edwin</pre>