From: rusin@vesuvius.math.niu.edu (Dave Rusin)
Newsgroups: sci.math
Subject: Re: Matrices with complex numbers
Date: 20 Dec 1997 21:00:16 GMT

In article <Pine.GSO.3.96.971217102059.12123A-100000@ella.ariel.cs.yorku.ca>,
Wai Ki Keith Hui  <cs962300@ariel.cs.yorku.ca> wrote:
>I have to calculate the determinants of matrices with complex numbers, but
>my Casio CFX9800G can't do it. (It is supposed to be a very powerful
>calculator) And I don't want to invest in a HP48G that can do it but
>expensive.
>
> Is there a way to make these calculations on my calculator that
>doesn't allow complex numbers in matrices?

Use the embedding of the complex numbers into the 2x2 real matrices to
replace every nxn complex matrix with a (2n)x(2n) real matrix. That is,
replace each entry  a + bi  by a little square 
	a	b
	-b	a

dave