Matrix

Attachment 25872Hello! 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

Hey Petrus.

The book is right.

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.

Try using the formula to expand the result.

But wtf im kinda confused... Ik the rule work so but look at the rule we did get.. Goosh this got confused

If you can outline the specific problem you have the other readers can do their best to address it.

Ok after alot thinking i did get ut:) i was just confusing myself ty