Hello! There is a example that i dont get same result:/
So ima post the problem and the formula or what u say hope some1 can understand because i get the last one to 2,0,1,x^2. I am wrong or the book
The expansion of the determinant of a 2x2 matrix with structure [a, b; c, d] (as represented in Octave) gives a result of a*d - b*c for the determinant.