Quaternions: Convert to a 2 x 2 matrix form

[Eddie W. Shore]

Code:

QTM(A,B,C,D)
BEGIN
RETURN [[A+B*i, C+D*i],
[-C+D*i, A-B*i]];
END;

For more details, please visit my blog at: http://edspi31415.blogspot.com/2015/06/h...nions.html