Question

why is n-factorial required when computing the determinant of a square matrix

Answer 1

?????????????????????? wot faktorial ???????????

if matrix= 1  2

               3 4

determinut=1*4 -2*3...4-6....=-2

Answer 2

because in the Laplace expansion for determinant, sign of minor depends on rows and collumns, you have (-1)^(i+j)*Aij

 

 

http://www.cliffsnotes.com/math/algebra/linear-algebra/the-determinant/laplace-expansions-for-the-determinant