Hi
Is there any special setting that I need to have on since I am getting the wrong inverse for one of my questions.
This is my original martix
17 17 5
21 18 21
2 2 19
this should be the inverse
4 9 15
15 17 6
24 0 17
I am getting on my calc(stopped after 3rd decimal place but there is like 10 or more decimal places)
-.319 .333 -.284
.380 -.333 .268
-.006 1.249 .054
So that is totally different
I put in my matrix by going 2nd-matrix-edit
then to inverse I did [A] then x-1 to get the -1 on top of it.
I have the ti-83 plus calc.
You find your example here: Computer Musings: Hill Cipher Deciphered