Posted by jessica on September 28, 2002 at 23:02:44:
find A^-1 or A inverse:
A= 1 1+i 0
0 1 i
-i 1-2i 2
...i know the first step is to set it up like this:
1 1+i 0|1 0 0
0 1 i|0 1 0
-i 1-2i 2|0 0 1
and then try to make the first section be the identity matrix and the matrix next to it would be the inverse. However, i am not quite sure how to isolate the -i on the bottom first row as well as the other 'a+bi' terms...thanks for the help