%
% Example 1 from Sec 3.3
%
A = [3 -2; -5 4]
det(A)
b = [6 8]'
det([b A(:,2)])/det(A)
det([A(:,1) b])/det(A)
A \ b
%
% Example 2
%
syms s
A = [3*s -2; -6 s]
det(A)
b = [4 1]'
det([b A(:,2)])/det(A)
det([A(:,1) b])/det(A)
A \ b
